title: Authors' response.
authors.affiliation: *Department of Pediatrics, University of Nigeria, Enugu, Nigeria †Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
authors.forename: Agozie
authors.initials: A
authors.lastname: Ubesie
authors.forename: Conrad R
authors.initials: CR
authors.lastname: Cole
mesh_terms: D015519:Bone Density; D001847:Bone Diseases / Q000209:etiology*; D001842:Bone and Bones / Q000378:metabolism*; D005260:Female; D006801:Humans; D007410:Intestinal Diseases / Q000150:complications*; D008297:Male; D010289:Parenteral Nutrition, Total / Q000009:adverse effects*; D014808:Vitamin D Deficiency / Q000209:etiology*