title: An international study of breast cancer.
mesh_terms: D000367:Age Factors; D001900:Boston; D001938:Brazil; D001943:Breast Neoplasms / Q000453:epidemiology*; D005260:Female; D006115:Greece; D006801:Humans; D007391:International Cooperation; D011247:Pregnancy; D012959:Socioeconomic Factors; D013624:Taiwan; D014041:Tokyo; D014852:Wales; D015022:Yugoslavia