Some problems with investigations and epidemiologic studies relating to pregnancy.
D000230:Adenocarcinoma / Q000139:chemically induced*; D004054:Diethylstilbestrol / Q000009:adverse effects*; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects; D013223:Statistics as Topic; D014625:Vaginal Neoplasms / Q000139:chemically induced*
D004054:Diethylstilbestrol