Affiliation: | 1. Community Medicine Research Center, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan;2. Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan, Taiwan;3. Department of Pediatrics, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan |