共 14 条
[1]
COMM ORG RES I, 1987, MAT CHILD HLTH DAT B
[4]
HARLAP S, 1980, REPRODUCTIVE LOSS
[6]
HERTZPICCIOTTO I, 1989, IN PRESS AM J EPIDEM, V130
[7]
MELLIN GW, 1962, JAMA-J AM MED ASSOC, V180, P91
[8]
*NAT CTR HLTH STAT, 1986, DHHS PHS861122 PUB
[9]
OFF STAT REG, 1988, HDB LOC REG BIRTHS D
[10]
PRITCHARD JA, 1985, WILLIAMS OBSTETRICS