1. Department of Internal Medicine, Section of Pulmonary, Critical Care, Allergy and Immunological Diseases, Wake Forest University School of Medicine, Wake Forest Baptist Medical Center, Winston-Salem, NC;
2. Department of Pediatrics, Division of Allergy and Immunology,
3. Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
4. Center for Human Genome Variation, and
5. Department of Immunology, Duke University Medical Center, Durham, NC;
6. Hamad Medical Corporation, Doha, Qatar; and