title: [Vitamin PP deficiency in children with recurrent and chronic pneumonia].
mesh_terms: D001361:Avitaminosis / Q000209:etiology*; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D009536:Niacinamide / Q000652:urine; D011014:Pneumonia / Q000150:complications*
chemical_list: D009536:Niacinamide
vernacular_title: O defitsite vitamina PP pri retsidiviruiushcheĭ i khronicheskoĭ pnevmonii u deteĭ.