Guidelines for Preventing and Treating Vitamin D Deficiency and Insufficiency Revisited

Boston University School of Medicine (M.F.H.), Boston, Massachusetts 02118-2526; Osteoporosis Research Program (N.C.B.), University of Wisconsin, Madison, Wisconsin 53706; Department of Rheumatology and Institute for Physical Medicine (H.A.B.-F.), University Hospital Zurich, 8091 Zurich, Switzerland; Divisions of Adolescent Medicine and Endocrinology (C.M.G.), Childrens Hospital, Boston, Massachusetts 02115; Division of Endocrinology and Metabolism (D.A.H.), Health Science Centre, University of Calgary Faculty of Medicine (R.P.H.), Calgary, Canada AB T2N 4N1; Creighton University (R.P.H.), Omaha, Nebraska 68131; Division of Preventative, Occupational, and Aerospace Medicine Mayo Clinic (M.H.M.), Rochester, Minnesota 55905; and Department of Foods and Nutrition (C.M.W.), Purdue University, West Lafayette, Indiana 47907