Vrieling, Alina ; Hein, Rebecca ; Abbas, Sascha ; Schneeweiß, Andreas ; Flesch-Janys, Dieter ; Chang-Claude, Jenny (2011) Serum 25-hydroxyvitamin D and postmenopausal breast cancer survival: a prospective patient cohort study. Breast Cancer Research, 13 (R74). pp. 1-9. ISSN 1465-542X