title: [Serum 25-hydroxyvitamin D (25-OH-D) concentration in breast-fed infants not receiving vitamin D preparations during the first 8 weeks of life].
mesh_terms: D001942:Breast Feeding; D004872:Ergocalciferols / Q000097:blood*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D012015:Reference Standards; D014807:Vitamin D / Q000008:administration & dosage
chemical_list: D004872:Ergocalciferols; D014807:Vitamin D
vernacular_title: Stezenie 25-hydroksywitaminy D (25-OH-D) w surowicy krwi niemowlat w pierwszych 8 tygodniach zycia karmionych pokarmem naturalnym nie otrzymujacych preparatów witaminy D.