共 31 条
[5]
BOLLEN N, 1993, FERTIL STERIL, V60, P504
[7]
Eliman A, 1998, J MATERN FETAL MED, V8, P119
[9]
THE NORTHWESTERN-UNIVERSITY TRIPLET STUDY .2. 14 TRIPLET PREGNANCIES DELIVERED BETWEEN 1981 AND 1986
[J].
ACTA GENETICAE MEDICAE ET GEMELLOLOGIAE,
1988, 37 (01)
:65-75
[10]
The contribution of mild and moderate preterm birth to infant mortality
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
2000, 284 (07)
:843-849