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The purpose of this clinical study is to estimate the perinatal mortality rate in different hospital births which is associated with maternal obstetric conditions from Jan. 1970 through Dec. 1972. For 3 years there were 11, 880 births that were based on 11, 336 single births, 312 twin births and 232 Korean-Caucasian births who were delivered at Severance(7, 844 births),... |