title: Biotin deficiency in a child on long-term TPN.
mesh_terms: D001710:Biotin / Q000172:deficiency*; D002675:Child, Preschool; D006801:Humans; D008297:Male; D010288:Parenteral Nutrition / Q000009:adverse effects*; D010289:Parenteral Nutrition, Total / Q000009:adverse effects*
chemical_list: D001710:Biotin