共 30 条
[1]
Abou Zahr C., 1991, MAT MORT
[2]
ASHLEY D, 1992, OXFORD DATABASE PERI
[3]
ATALLAH A, 1992, OXFORD DATABASE PERI
[6]
CHALMERS I, 1980, TOPICS PERINATAL MED, P1
[7]
COLLINS R, 1992, OXFORD DATABASE PERI
[8]
DULEY L, 1992, OXFORD DATABASE PERI
[9]
FARRELL B, 1992, OXFORD DATABASE PERI
[10]
HOGBERG U, 1985, ACTA OBSTET GYN SCAN, V64, P583