title: [Vitamin-D deficiency].
authors.forename: R F
authors.initials: RF
authors.lastname: Duyff
mesh_terms: D004641:Emigration and Immigration; D005260:Female; D006801:Humans; D009426:Netherlands / Q000453:epidemiology; D011481:Protective Clothing / Q000009:adverse effects*; D014808:Vitamin D Deficiency / Q000453:epidemiology*