title: [Should even youngsters spend the Winter in the equator?].
authors: T
authors: T
authors: Möttönen
authors: M
authors: M
authors: Lehtonen-Veromaa
authors: K
authors: K
authors: Irjala
authors: J
authors: J
authors: Viikari
mesh_terms: D000293:Adolescent; D005387:Finland / Q000453:epidemiology; D006801:Humans; D009747:Nutritional Physiological Phenomena; D012621:Seasons; D013472:Sunlight; D014807:Vitamin D / Q000096:biosynthesis*; D014808:Vitamin D Deficiency / Q000453:epidemiology / Q000517:prevention & control*
chemical_list: D014807:Vitamin D