| Affiliation: | aMayo Medical School, Rochester, MN;bDepartment of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN;cDepartment of Family Medicine, Mayo Clinic, Rochester, MN;dMRC Mineral Metabolism Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand and Chris Hani Baragwanath Hospital, Johannesburg, South Africa;eDepartment of Pediatrics, University of Utah, Salt Lake City, UT;fDepartment of Chemical Pathology, Jos University Teaching Hospital, Jos, Nigeria |
