[Contrast study between two birth defect monitoring methods based on hospital and population].
Zhao
Xiu-yan
XY
Fujian Provincal Maternal and Children Health Hospital, Fuzhou 350001, China.
You
Zhao-hua
ZH
Li
Yan-hua
YH
D000013:Congenital Abnormalities / Q000453:epidemiology*; D006761:Hospitals / Q000706:statistics & numerical data; D006801:Humans; D011159:Population Surveillance / Q000379:methods*