Multiple births and breast cancer.
La Vecchia
C
C
Negri
E
E
Braga
C
C
Fanceschi
S
S
D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000209:etiology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010298:Parity