title: No association between birth season and vitamin D concentration in adults in a North Norwegian population-the Tromsø study.
authors: 1 Tromsø Endocrine Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway ; 2 Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway.
authors: Ieva
authors: I
authors: Zostautiene
authors: 1 Tromsø Endocrine Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway ; 2 Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway.
authors: Rolf
authors: R
authors: Jorde
authors: 1 Tromsø Endocrine Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway ; 2 Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway.
authors: Guri
authors: G
authors: Grimnes