1. Division of Allergy, Asthma and Immunology, Children's Mercy Hospital, Kansas City, MO, USA
2. Department of Pediatrics, University of Chicago Medicine, Comer Comer Children's Hospital, Chicago, IL, USA
3. Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE, USA
4. Center for Environmental Health, Children's Mercy Hospital, Kansas City, MO, USA