共 11 条
[2]
*CDCP, 1990, MORBIDITY MORTALITY, V39, P23
[3]
CHENG Y, 1999, CHIN MOD PREV MED, V26, P479
[4]
CHENG Y, 1998, J CHIN BEHAV MED SCI, V7, P33
[5]
Cheng YM, 1997, CONTRACEPTION, V55, P15
[6]
*JOHNS HOPK BLOOMB, POPULATIONS REPORTS, V25, P1
[7]
*MIN PUBL HLTH CHI, 2001, 2001 HLTH YB CHIN, P493
[8]
Singh S., 1993, International Family Planning Perspectives, V19, P134, DOI 10.2307/2133497