title: Risk.
authors.affiliation: BMJ, London WC1H 9JR. jfletcher@bmj.com
authors.forename: John
authors.initials: J
authors.lastname: Fletcher
mesh_terms: D001943:Breast Neoplasms / Q000139:chemically induced*; D015914:Estrogen Replacement Therapy / Q000009:adverse effects*; D006801:Humans; D018570:Risk Assessment / Q000379:methods*