title: Patterns of care studies in oncology: considerable potential utility, but risk of serious bias.
authors: Maurie
authors: M
authors: Markman
mesh_terms: D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D001943:Breast Neoplasms / Q000188:drug therapy* / Q000473:pathology*; D005260:Female; D006801:Humans