title: Re: effect of hormone replacement therapy on breast cancer risk: estrogen versus estrogen plus progestin.
authors: D F
authors: DF
authors: Archer
authors: T
authors: T
authors: Bush
authors: L E
authors: LE
authors: Nachtigall
mesh_terms: D015982:Bias; D001943:Breast Neoplasms / Q000139:chemically induced*; D016022:Case-Control Studies; D015914:Estrogen Replacement Therapy / Q000009:adverse effects*; D004967:Estrogens / Q000008:administration & dosage / Q000009:adverse effects*; D005260:Female; D006801:Humans; D018579:Patient Selection; D011372:Progestins / Q000008:administration & dosage / Q000009:adverse effects*; D012107:Research Design; D012306:Risk; D012307:Risk Factors
chemical_list: D004967:Estrogens; D011372:Progestins