1. Division of Adolescent Medicine, Department of Pediatrics, Brooke Army Medical Center, Joint Base San Antonio-Fort Sam Houston, Texas
2. Defense Health Agency, Falls Church, Virginia
3. Department of Pediatrics, Uniformed Services University, Bethesda, Maryland
4. Department of Pulmonary, Critical Care and Sleep Medicine, Walter Reed National Military Medical Center, Bethesda, Maryland
5. Department of Medicine, Uniformed Services University, Bethesda, Maryland