1. Department of Medicine, Amiri Hospital, Ministry of Health, Kuwait City 13110, Kuwait
2. Department of Microbiology, College of Medicine, Kuwait University, Kuwait City 13110, Kuwait; Department of Allergy, Al-Rashed Allergy Center, Ministry of Health, Kuwait City 13110, Kuwait
3. Department of Allergy, Al-Rashed Allergy Center, Ministry of Health, Kuwait City 13110, Kuwait; Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, China; Department of Pulmonary Medicine, Abbassia Chest Hospital, Ministry of Health, Cairo 11517, Egypt