title: Letrozole or tamoxifen in early breast cancer.
authors.forename: Rowan T
authors.initials: RT
authors.lastname: Chlebowski
mesh_terms: D018931:Antineoplastic Agents, Hormonal / Q000009:adverse effects* / Q000627:therapeutic use; D001943:Breast Neoplasms / Q000188:drug therapy*; D002318:Cardiovascular Diseases / Q000139:chemically induced / Q000401:mortality*; D006801:Humans; D000077289:Letrozole; D009570:Nitriles / Q000009:adverse effects*; D013629:Tamoxifen / Q000009:adverse effects*; D014230:Triazoles / Q000009:adverse effects*
chemical_list: D018931:Antineoplastic Agents, Hormonal; D009570:Nitriles; D014230:Triazoles; D013629:Tamoxifen; D000077289:Letrozole