TY  - GEN
AU  - Lian,Z H
AU  - Huang,Y M
TI  - Birth defects epidemiology in the Beijing-Tianjin area
SN  - 0366-6999
PY  - 1988///0510
KW  - China
KW  - Congenital Abnormalities
KW  - epidemiology
KW  - Female
KW  - Humans
KW  - Infant, Newborn
KW  - Pregnancy
KW  - Seasons
KW  - Sex Factors
N1  - Publication Type: Journal Article
ER  -