Serum Vitamin D Levels and Markers of Severity of Childhood Asthma in Costa Rica

John M. Brehm(Brigham and Women's Hospital), Augusto A. Litonjua(Golisano Children's Hospital), Gary M. Hunninghake(Hubei University of Science and Technology), Juan C. Celedón(Children's Hospital of Pittsburgh), Lydiana Ávila(Hospital Nacional de Niños), Scott T. Weiss(Outcomes Research Consortium), Manuel E. Soto-Quirós(Hospital Nacional de Niños), Bruce W. Hollis(Medical University of South Carolina), Jody Sylvia, Daniel Laskey
American Journal of Respiratory and Critical Care Medicine
January 29, 2009
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