title: Letter to the editor - author's response.
authors.affiliation: Leiden University Medical Center, Department of Surgery, PO Box 9600, 2300 RC Leiden, The Netherlands.
authors.forename: W
authors.initials: W
authors.lastname: van de Water
authors.forename: D B Y
authors.initials: DB
authors.lastname: Fontein
authors.forename: C J H
authors.initials: CJ
authors.lastname: van de Velde
mesh_terms: D000730:Androstadienes / Q000627:therapeutic use*; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D001943:Breast Neoplasms / Q000188:drug therapy*; D018270:Carcinoma, Ductal, Breast / Q000188:drug therapy*; D018275:Carcinoma, Lobular / Q000188:drug therapy*; D005260:Female; D006801:Humans; D011960:Receptors, Estrogen / Q000096:biosynthesis*
chemical_list: D000730:Androstadienes; D011960:Receptors, Estrogen