共 48 条
[3]
Alexander GR, 1996, PUBLIC HEALTH REP, V111, P408
[5]
[Anonymous], 2010, NATL VITAL STAT REPO, V60, P1
[6]
MATERNAL MARITAL-STATUS AS A RISK FACTOR FOR INFANT-MORTALITY
[J].
FAMILY PLANNING PERSPECTIVES,
1994, 26 (06)
:252-+
[8]
BROWN ER, 1999, NONCITIZEN CHILDRENS