Opening Pandora's box
Epidemiology
.
1992 Mar;3(2):78-81.
Author
D B Petitti
PMID:
1576229
No abstract available
Publication types
Editorial
MeSH terms
Abortion, Spontaneous / epidemiology*
Bias*
California / epidemiology
Female
Humans
Pregnancy
Research Design / standards*
Water Supply / standards*