title: A case of hypogonadism presented with alopecia universalis.
authors.affiliation: Department of Internal Internal Medicine, Düzce University Faculty of Medicine, Düzce, Turkey.
authors.forename: Gökhan
authors.initials: G
authors.lastname: Celbek
authors.affiliation: Department of Dermatology, Düzce University Faculty of Medicine, Düzce, Turkey.
authors.forename: Hakan
authors.initials: H
authors.lastname: Turan
authors.affiliation: Department of Endocrinology, Düzce University Faculty of Medicine, Düzce, Turkey.
authors.forename: Yusuf
authors.initials: Y
authors.lastname: Aydın
authors.affiliation: Department of Gastroenterology, Düzce University Faculty of Medicine, Düzce, Turkey.
authors.forename: Fatih
authors.initials: F
authors.lastname: Ermiş