1. Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
2. Akron Children's Hospital, Department of Pediatrics, Akron
3. Cleveland Clinic Southpointe, Department of Medicine, Cleveland, Ohio
4. Geisel School of Medicine at Dartmouth, Departments of Medicine and Pediatrics, Hanover
5. Dartmouth-Hitchcock Medical Center, Section of Allergy and Immunology, Lebanon, New Hampshire, USA