title: [Endogenous serum levels of vitamin B-12 in children with chronic hepatitis].
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D005260:Female; D006505:Hepatitis / Q000097:blood*; D006801:Humans; D007223:Infant; D008297:Male; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D014805:Vitamin B 12
vernacular_title: Badania nad zachowaniem sie poziomu endogennej witaminy B12 w surowicy krwi u dzieci z przewlekłym zapaleniem watroby