1. Department of Allergy, Asthma and Immunology, Medical Student, Penn State College of Medicine, Hershey, PA, USA
2. Department of Allergy, Asthma and Immunology, Resident, Cairo University School of Medicine, Giza, Egypt
3. Department of Allergy, Asthma and Immunology, Medical Student, Cairo University School of Medicine, Giza, Egypt
4. Department of Allergy, Asthma, and Immunology, Professor of Medicine, Pediatrics, and Biomedical Sciences, Hershey, PA, USA