1 Division of Allergy, Immunology, and Pulmonary Medicine, Department of Pediatrics, Duke University Medical Center, Box 2644, Durham, NC, 27710, USA.
2 Duke Eye Center and Department of Ophthalmology, School of Medicine, Duke University, Durham, NC, 27710, USA.
3 Division of Allergy, Immunology, and Pulmonary Medicine, Department of Pediatrics, Duke University Medical Center, Box 2644, Durham, NC, 27710, USA. Electronic address: mai.elmallah@duke.edu.