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"Most downloaded" Articles are from the articles published in 2023 during the last six months.

Original Article
Neonatology (Perinatology)
Mortality of very low birth weight infants by neonatal intensive care unit workload and regional group status   (27 times)
Sung-Hoon Chung, Chae Young Kim, Yong-Sung Choi, Myung Hee Lee, Jae Woo Lim, Byong Sop Lee, Ki-Soo Kim; the Korean Neonatal Network
Clin Exp Pediatr. 2024;67(11):619-627.   Published online September 12, 2024
Question: How do structural and staffing characteristics of neonatal intensive care units (NICUs) influence the mortality rates of very low birth weight infants (VLBWIs)?
Findings: NICUs with higher staffing levels, particularly with more neonatologists, and those offering advanced care levels were associated with lower mortality rates. Additionally, regional disparities were observed, with some areas demon-strating significantly higher survival rates.
Meaning: Adequate staffing and equitable regional distribution of medical resources are crucial for improving survival outcomes in VLBWIs. Efforts to enhance NICU staffing and address regional healthcare disparities are essential for optimizing care quality and reducing mortality in this vulnerable population.
Other
Virtual, augmented, and mixed reality: potential clinical and training applications in pediatrics   (27 times)
Suyoung Yoo, Meong Hi Son
Clin Exp Pediatr. 2024;67(2):92-103.   Published online May 24, 2023
· Review of articles that investigated the applications of virtual, augmented, or mixed reality in pediatric clinical settings and in the training of pediatric medical professionals was conducted.
· A total of 89 studies were retrieved, with 36 randomized controlled trials.
· In most studies, intervention using the novel technology was at least as effective or more effective than the traditional method.
· Use of virtual, augmented, and mixed reality has potential in pediatrics.
Review Article
Gastroenterology
High-resolution esophageal manometry in children   (26 times)
Yogesh Waikar
Clin Exp Pediatr. 2023;66(4):155-160.   Published online October 17, 2022
High-resolution esophageal manometry can be safely performed in children where recurrent vomiting and persistent dysphagia is the working diagnosis after excluding nonluminal and structural obstructive pathologies using pediatric upper gastrointestinal endoscopy. Normal manometry values are available. Clinical picture, biochemical tests, radiological interpretation, and endoscopic findings with manometry completes the analysis of patients with recurrent vomiting and dysphagia.
Immunology
Systemic autoinflammatory disorders   (26 times)
Dae Chul Jeong
Clin Exp Pediatr. 2023;66(10):432-438.   Published online June 14, 2023
· Systemic autoinflammatory disorders (SAID) are disorders caused by dysregulation of the innate immunity with genetic background, leading to recurrent episodes of systemic inflammation.
· SAID is characterized by recurrent acute inflammatory responses including fever or skin manifestations, unrelated with infection or malignancy.
· Diagnosis is based on family and long-term history with detailed clinical and laboratory manifestations during febrile periods.
Original Article
Genetics and Metabolism
Long-term follow-up of neurocognitive function in patients with citrin deficiency and cholestasis   (26 times)
Meng-Ju Melody Tsai, Jung-Chi Chang, Heng-Yu Lu, Susan Shur-Fen Gau, Yin-Hsiu Chien, Wuh-Liang Hwu, Yen-Hsuan Ni, Huey-Ling Chen, Ni-Chung Lee
Clin Exp Pediatr. 2025;68(3):257-265.   Published online November 28, 2024
Question: Do transient metabolic disturbances in early childhood due to citrin deficiency have lasting effects on neurocognitive function?
Finding: Children with citrin deficiency have a higher prevalence of ADHD compared to the general population, with elevated ammonia levels in infancy associated with increased hyperactivity-impulsivity risk.
Meaning: Metabolic disturbances in early childhood due to citrin deficiency may contribute to long-term neurocognitive impacts, particularly ADHD, while IQ and life outcomes generally remain normal.
Clinical Note
Gastroenterology
Congenital antral web: rare cause of gastric outlet obstruction successfully managed with endoscopic balloon dilatation   (26 times)
Upasana Ghosh, Ujjal Poddar, Srinivas Srinidhi Vadlapudi, Moinak Sen Sarma, Anshu Srivastava
Clin Exp Pediatr. 2025;68(3):266-268.   Published online January 13, 2025
Editorial
Cardiology
What we should know about pediatric heart failure: children are not small adults   (26 times)
Ja-Kyoung Yoon
Clin Exp Pediatr. 2025;68(1):62-64.   Published online November 6, 2024
· Pediatric heart failure (PHF) features high morbidity and mortality rates.
· Although adults and children can share a common diagnosis of heart failure, the underlying causes can differ significantly and require distinct therapeutic approaches.
· Treatments designed for adults are often applied to PHF despite the fundamental physiological and developmental differences between them.
· Child-specific data are vital for the development of tailored treatments to meet the unique needs of patients with PHF.
Original Article
Infection
Serum copper and ceruloplasmin levels as biomarkers reflecting liver fibrosis in children with autoimmune hepatitis   (26 times)
Salma Abdel Megeed Nagi, Mai Ibrahim Elashmawy, Amany E. Elashkar, Mohamed Zaeim Hafez, Ashraf A.E. Emara, Osama Mohammad Abdelhay, Albayoumi A.B. Fouda, Mohamed AbdelAziz Doma, Ahmad Mohamed Awad, Ahmed Mohammed Saba, Hesham Abdelrahman Ahmed, Ahmed Mohamed Gad Allah, Fatma Mahmoud Abdelraheem, Mohamed A. Gad, Mohamad A. Soliman, Tamer I. Abdalrhman, Khaled Hassaan Awad, Ismael A.K.M. El-lebedy, Mostafa M. Abdelnaser, Mohammed Z. Abdel Kareem, Marwa Fekry Hassan, Shymaa Sobhy Menshawy Khalifa
Clin Exp Pediatr. 2025;68(11):909-920.   Published online August 6, 2025
· A total of 159 children with autoimmune hepatitis (AIH; 60.3% female, 13.2% type 2 AIH) were identified. According to a global study, the estimated annual incidence of AIH in Egypt is 1.28 cases per 100,000 inhabitant-years.
· No studies to date have examined the serum levels of copper or ceruloplasmin in children with AIH. Therefore, here we investigated whether serum copper and ceruloplasmin levels are useful for identifying liver fibrosis in children with AIH.
· Serum copper and ceruloplasmin levels may provide important information for the identification of advanced liver fibrosis in children with AIH.
General Pediatrics
Virtual reality for pain reduction during intravenous injection in pediatrics: a systematic review and meta-analysis of controlled clinical trials   (25 times)
Ensiyeh Jenabi, Saeid Bashirian, Amir Mohammad Salehi, Masoud Rafiee, Mozhdeh Bashirian
Clin Exp Pediatr. 2023;66(12):533-537.   Published online June 14, 2023
Question: This is the first meta-analysis to examine published evidence of the effectiveness of virtual reality at reducing pain during pediatric intravenous injections.
Finding: Our results suggest that virtual reality effectively reduces pain associated with intravenous injections in pediatric patients.
Meaning: These findings suggest the importance of virtual reality in decreasing the pain of intravenous injections among children.
Clinical Note
Immunology
Comparative analysis of rare periodic fever syndromes including the first Korean case of hyperimmunoglobulinemia D and periodic fever syndrome   (25 times)
Yoonsun Yoon, Hyun Seo Kim, Jung Ok Shim, JungHwa Lee
Clin Exp Pediatr. 2024;67(10):550-552.   Published online September 24, 2024
Original Article
Gastroenterology
Differences in immune cells and gene expression in human milk by parity on integrated scRNA sequencing   (25 times)
Dae Yong Yi, Hong-Jai Park, Min Sun Shin, Hyoungsu Kim, Sang Jin Lee, Insoo Kang
Clin Exp Pediatr. 2025;68(2):141-152.   Published online January 10, 2025
Question: Is there a difference in immune cells in human breast milk by parity?
Finding: There were higher proportions of monocytes and T/B cells in the primiparous and multiparous group, respectively. The expression of genes with a direct role in the infant immune system and immune response-related genes were highest in the primiparous group
Meaning: There were parity-dependent differences in the expression of genes between innate and adaptive immune cells.
Developmental and Behavioral Medicine
Neonatal risk factors associated with autism spectrum disorders: an umbrella review   (24 times)
Amir Mohammad Salehi, Erfan Ayubi, Salman Khazaei, Ensiyeh Jenabi, Saeid Bashirian, Zohreh Salimi
Clin Exp Pediatr. 2024;67(9):459-464.   Published online July 19, 2024
Question: What are the neonatal risk factors for autism spectrum disorder (ASD)?
Findings: Significant effect sizes were observed for congenital heart disease (odds ratio [OR], 1.35), macrosomia (OR, 1.11), low birth weight (OR, 1.63), very low birth weight (OR, 2.25), small for gestational age (OR, 1.17), jaundice (OR, 1.74), male sex (OR, 1.47), and Apgar score (OR, 1.40).
Meaning: These factors were identified as risk factors for ASD.
Review Article
Other
Global trends in importance of 24-hour movement behaviors to pediatric health: implications for South Korea   (24 times)
Eun-Young Lee, Reyana Jayawardena, Seiyeong Park, Justin Y Jeon, Yeon-Soo Kim, Mark S. Tremblay
Clin Exp Pediatr. 2025;68(1):16-29.   Published online November 11, 2024
· The 24-hour movement behavior paradigm provides an important framework for future pediatric health promotion efforts.
· Policy priorities should include advancing surveillance and monitoring assessments related to 24-hour movement behaviors, evaluating their implementation in school and government policies, and building preparedness for future pandemics and natural disasters, including climate change, by promoting healthy 24-hour movement behaviors.
· Future research should advocate for the promotion of 24- hour movement behaviors.
Editorial
Neonatology (Perinatology)
Advancements and challenges in neonatal resuscitation: embracing laryngeal mask airways for improved outcomes   (24 times)
Jang Hoon Lee
Clin Exp Pediatr. 2025;68(4):298-299.   Published online November 28, 2024
Positive pressure ventilation (PPV) is the most critical intervention provided during delivery room resuscitation. In the new guidelines, this recommendation has been expanded to suggest the use of laryngeal mask airyway (LMA) versus face masks for PPV. Evidence-based information and hands-on training related to this practice will help more healthcare providers become familiar with and appropriately use LMA during delivery room resuscitations.
General Pediatrics
Global breastfeeding efforts: a long way to go   (24 times)
Hye-Jung Shin
Clin Exp Pediatr. 2025;68(4):300-302.   Published online November 13, 2024
· Despite much effort, breastfeeding practices remain unsatisfactory worldwide.
· Effective breastfeeding-promoting interventions are needed that are appropriate for age, culture, and social environment.
· Interventions can promote breastfeeding, especially in younger populations such as adolescent mothers.
Nephrology (Genitourinary)
Optimal hemodialysis treatment for pediatric kidney failure patients   (23 times)
Yo Han Ahn
Clin Exp Pediatr. 2023;66(3):125-126.   Published online February 15, 2023
· Although the basic concept of hemodialysis (HD) is similar in adults and children, specific factors must be considered in the latter, including the small dialyzer and circuit, difficult vascular access, and frequent complications.
· HD-associated complications include catheter-related problems, hemodynamic instability, and neurodevelopmental and cognitive dysfunction.
· Pediatric HD is challenging, and steady efforts are needed to perform it safely and reduce its complications, thereby improving clinical outcomes.
Original Article
Developmental and Behavioral Medicine
Parenting stress and interactive engagement behaviors in children with developmental delay   (23 times)
Jung Sook Yeom, Rock Bum Kim, Jae Young Cho, Ji Sook Park, Eun Sil Park, Ji-Hyun Seo, Jae-Young Lim, Hyang-Ok Woo
Clin Exp Pediatr. 2023;66(6):252-261.   Published online May 19, 2023
· Question: What level of parenting stress is experienced by parents of children with developmental delays (DDs) without autism spectrum disorder, and what factors contribute to it?
· Findings: Parents of children with DDs experienced high parenting stress that were significantly mediated by their children’s low interactive behaviors.
· Meaning: The interactive behaviors of children with DDs mediate parenting stress.
Review Article
Developmental and Behavioral Medicine
Effect of pesticide exposure on stunting incidence: a systematic review and meta-analysis   (23 times)
Sani Rachman Soleman, Yaltafit Abror Jeem, Muhammad Fathi Banna Al Faruqi, Mahdea Kasyiva, Vita Widyasari, Kuswati Kuswati, Nur Aini Djunet, Muflihah Rizkawati, Ety Sari Handayani
Clin Exp Pediatr. 2024;67(10):510-518.   Published online September 24, 2024
This review aimed to determine whether pesticide exposure is associated with stunting in children. The 13 included studies agree that pesticide exposure is not correlated with stunting incidence regardless of substance type (organophosphate and pyrethroid). Heterogeneity appeared with age covariate as potential confounding. The evidence of this study is challeng-ing, as the adverse effects of pesticides grossly occurred. The protection of children is warranted for preventing future neurodevelopment issues.
Correspondence
Infection
A commentary on "COVID-19 vaccine hesitancy among parents of children with systemic lupus erythematosus"   (23 times)
Hinpetch Daungsupawong, Viroj Wiwanitkit
Clin Exp Pediatr. 2025;68(8):624-625.   Published online April 16, 2025
Letter to the Editor
General Pediatrics
Vitamin B12 deficiency in anemic children before versus after age 2 years: a form of hidden hunger in India   (22 times)
Sahil Goel, Ruchika Bhatnagar, Anita Kumari, Brig Prem Lochan Prasad, Lahar Sahai
Clin Exp Pediatr. 2024;67(2):116-118.   Published online January 24, 2024
Neonatology (Perinatology)
Pentraxin 3 as a marker of early-onset neonatal sepsis   (22 times)
Safaa ELMeneza, Iman El-Bagoury, Hind Rayes, Amira Hassan
Clin Exp Pediatr. 2024;67(6):312-314.   Published online May 23, 2024
Original Article
Neurology
Instability of revised Korean Developmental Screening Test classification in first year of life   (22 times)
Ji Eun Jeong, You Min Kim, Na Won Lee, Gyeong Nam Kim, Jisuk Bae, Jin Kyung Kim
Clin Exp Pediatr. 2025;68(1):97-103.   Published online November 11, 2024
Question: How stable are the revised Korean Developmental Screening Test score classifications in early infancy?
Finding: A significant number of infants improved into the peer and high-level group (≥-1 standard deviations), especially in the gross motor area.
Meaning: The early detection of developmental delay requires a comprehensive medical history, physical and neurological examinations, and repeated developmental screenings.
Infection
Seroprevalence of maternal peripartum human T-cell lymphotropic virus type-1 infection: a systematic review and meta-analysis of the Nigerian literature   (21 times)
Abdulrasheed Usman, Muhammad Hamis Musa, Bukhari Isah Shuaib, Olayemi Balogun, Mukhtar Adeiza
Clin Exp Pediatr. 2023;66(7):307-316.   Published online December 22, 2022
The peripartum period is an important transmission time for human T-cell lymphotropic virus-1 (HTLV-1) infection, mainly via breastfeeding and partly through the placental tissues of carrier mothers. Although most HTLV-1–infected individuals are asymptomatic, fetal and childhood infections often result in several diseases with disappointing treatment outcomes. An estimated HTLV-1 burden in Nigeria among perinatal women must be determined to enable rational planning of a comprehensive health care intervention.
Pulmonology
Oligohydramnios affects pulmonary functional/structural abnormalities in school-aged children with bronchopulmonary dysplasia   (21 times)
Jeong Eun Shin, Soon Min Lee, Mi-Jung Lee, Jungho Han, Joohee Lim, Haerin Jang, Ho Seon Eun, Min Soo Park, Soo Yeon Kim, Myung Hyun Sohn, Ji Ye Jung, Kyung Won Kim
Clin Exp Pediatr. 2024;67(5):257-266.   Published online April 16, 2024
Question: Is bronchopulmonary dysplasia (BPD) associated with functional/structural abnormalities later in life?
Finding: School-aged children with severe BPD had abnormalities on pulmonary function tests and lung computed tomography despite no subjective respiratory symptoms; however, only prenatal oligohydramnios and prolonged ventilator use were associated with abnormal lung function.
Meaning: Long-term monitoring of preterm infants’ lung health is essential, especially for those with prenatal oligohydramnios or prolonged ventilator use.
Infection
Clinical, biochemical, and genetic study of TACE/TNF-α/ACE signaling pathway in pediatric COVID-19 infection   (21 times)
Ahmed El-Abd Ahmed, Sawsan M.A. Abuhamdah, Mohammed H. Hassan, Nagwan I. Rashwan, Eman A. Abd-Elmawgood, Haggagy Mansour, Hoda S. Sherkawy, Shymaa G. Rizk
Clin Exp Pediatr. 2024;67(12):704-717.   Published online November 27, 2024
Question: Is the tumor necrosis factor (TNF) signaling pathway (TNF-α-converting enzyme [TACE]/TNF-α/angiotensin converting enzyme [ACE]) involved in pediatric coronavirus disease 2019 (COVID-19) infection?
Finding: Significantly increased circulating TACE/TNF-α and decreased ACE2 levels were noted. TNF-α-308G/A plays a significant role in susceptibility to COVID-19 infection among children. The ACE (I/D) (rs4646994) and ACE2 (rs2285666) single nucleotide polymorphisms lack significant associations with pediatric COVID-19 infection.
Meaning: The TNF signaling pathway participates in pediatric COVID-19 infection.
Endocrinology
Prednisolone impairs trabecular bone score changes in adolescents with 21-hydroxylase deficiency   (21 times)
Pattara Wiromrat, Yutapong Raruenrom, Phanpaphorn Namphaisan, Nantaporn Wongsurawat, Ouyporn Panamonta, Chatlert Pongchaiyakul
Clin Exp Pediatr. 2025;68(3):238-246.   Published online November 13, 2024
Question: What is the prevalence of an impaired trabecular bone score (TBS), a measure of bone microarchitecture, in adolescents with 21-hydroxylase deficiency (21OHD)? Do prednisolone and hydrocortisone affect TBS differently in this patient population?
Finding: Impaired TBS was observed in 18% of participants. Prednisolone use negatively impacted TBS change.
Meaning: Impaired TBS is prevalent among adolescents with 21OHD. Prednisolone impairs trabecular bone microarchitecture development.
Gastroenterology
Assessing indicators and clinical differences between functional and organic childhood constipation: a retrospective study in pediatric gastroenterology clinics   (20 times)
Hasan M. Isa, Fatema A. Alkharsi, Fatema A. Salman, Maryam S. Ali, Zahra K. Abdulnabibi, Afaf M. Mohamed
Clin Exp Pediatr. 2023;66(7):296-306.   Published online June 14, 2023
Question: What causes childhood constipation, and what can predict organic constipation?
Finding: Constipation represents 14.7% of gastroenterology visits. Functional constipation is more common among constipation types, while organic constipation is more common in young children and those with a low body weight, stunted growth, mucus in the stool, and associated diseases.
Meaning: Younger children and those with lower growth or mucus in the stool should be assessed for underlying organic causes of constipation.
Neonatology (Perinatology)
Oral administration of bone marrow-derived mesenchymal stem cells attenuates intestinal injury in necrotizing enterocolitis   (20 times)
Yeong Seok Lee, Yong Hoon Jun, Juyoung Lee
Clin Exp Pediatr. 2024;67(3):152-160.   Published online February 19, 2024
Question: What is the optimal dose of bone marrow-derived mesenchymal stem cells (BM-MSCs) for treating necrotizing enterocolitis (NEC), and is orally administered BM-MSC effective?
Findings: High (1×106 cells) or multiple BM-MSC doses showed similar effects as low (1×105 cells) doses of intraperitoneally administered BM-MSCs. Furthermore, orally administered BM-MSCs were as effective as intraperitoneally administered BM-MSCs.
Meaning: Orally administered low-dose BM-MSCs are a potential treatment for NEC.
Editorial
Allergy
Effect of metabolic syndrome on pulmonary dysfunction in children with asthma   (20 times)
Hyo-Bin Kim
Clin Exp Pediatr. 2025;68(2):136-137.   Published online November 13, 2024
· The prevalence of metabolic syndrome increased in Korean children during the coronavirus disease 2019 pandemic owing to reduced physical activity resulting from social distancing.
· Metabolic syndrome impacts pulmonary dysfunction in childhood asthma.
· Further studies are needed to understand the mechanism linking asthma and metabolic syndrome and develop interventions.
Original Article
Hematology
Changes and correlations of T-cell coinhibitory molecule programmed death-1 and interferon-γ in pediatric immune thrombocytopenia   (19 times)
Fady Mohamed El-Gendy, Amira M.F. Shehata, Esam Awad Abd El-Kawy, Mahmoud Ahmed El-Hawy
Clin Exp Pediatr. 2023;66(3):127-133.   Published online February 24, 2023
Question: What are the PD-1+ CD4+ T cells percentages and serum interferon gamma (IFN-γ) levels of pediatric patients with immune thrombocytopenia (ITP)?
Finding: Compared with healthy controls, the PD-1+ CD4+ T cells percentages and IFN-γ levels were significantly higher in ITP patients before and 1 month after therapy.
Meaning: Our findings suggest that PD-1+ CD4+ T cells and IFN-γ are involved in the pathophysiological process of ITP.


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