共 37 条
[1]
AGUDELO AC, 1999, AM J OBSTET GYNECOL, V181, P1026
[2]
*CDCP NAT CTR HLTH, 2000, LINK BIRTH INF DEATH
[3]
Crowley P, 2000, COCHRANE DB SYST REV, DOI DOI 10.1002/14651858.CD000065
[5]
EASTERLING TR, 1990, OBSTET GYNECOL, V76, P1061
[10]
Gupta K B, 1996, J Indian Med Assoc, V94, P16