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American Journal of Obstetrics and Gynecology|July 1, 1988
Low serum alpha-fetoprotein level and sex chromosome monosomyY E Winston, E O Horger, J P Van Dorsten
Obstetrics and Gynecology|July 1, 1990
Antepartum uterine activity characteristics differentiating true from threatened preterm laborR B Newman, G S Richmond, Y E Winston, et al.
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