title: RE: Serum vit D levels and response to molecular subtypes in breast cancer.
authors.affiliation: Leiden University Medical Center, Deparment of Clinical Oncology, The Netherlands.
authors.forename: Judith
authors.initials: J
authors.lastname: Kroep
authors.affiliation: Leiden University Medical Center, Departments of Surgery & Clinical Oncology, The Netherlands. Electronic address: a.charehbili@lumc.nl.
authors.forename: Ayoub
authors.initials: A
authors.lastname: Charehbili
authors.affiliation: Leiden University Medical Center, Department of Endocrinology, The Netherlands.
authors.forename: Neveen
authors.initials: N
authors.lastname: Hamdy