title: Redefinition of vitamin D deficiency.
authors.forename: Shirwan A
authors.initials: SA
authors.lastname: Mirza
mesh_terms: D006801:Humans; D006962:Hyperparathyroidism, Secondary / Q000175:diagnosis* / Q000209:etiology*; D012621:Seasons; D014808:Vitamin D Deficiency / Q000150:complications* / Q000175:diagnosis*