The frequency of imperforate hymen in northern Italy.
Parazzini
F
F
Cecchetti
G
G
D000328:Adult; D000013:Congenital Abnormalities / Q000453:epidemiology; D005260:Female; D006801:Humans; D006924:Hymen / Q000002:abnormalities*; D007558:Italy / Q000453:epidemiology