共 19 条
[4]
Butler NR, 1963, PERINATAL MORTALITY
[5]
DELGADO HL, 1986, POPULATIONS STUDIES, V94
[6]
DEMIRON EMC, 1982, REV OBSTETRICIA GINE, V1, P26
[7]
Edouard L, 1985, World Health Stat Q, V38, P289
[8]
FERRAZ EM, 1988, AM J EPIDEMIOL, V128, P1111
[9]
GALAZKA A, 1986, WHOEPIGEN868 PUBL
[10]
KRAMER MS, 1987, B WORLD HEALTH ORGAN, V65, P663