The number of menstrual cycles prior to the first full term pregnancy an important risk factor of breast cancer?
Olsson
H
H
Department of Oncology, University Hospital, Lund, Sweden.
Ranstam
J
J
Landin Olsson
M
M
D000367:Age Factors; D001943:Breast Neoplasms / Q000209:etiology*; D005260:Female; D006801:Humans; D008598:Menstruation; D011247:Pregnancy; D012307:Risk Factors