1 Department of Dermatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan; Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan.
2 Department of Gastroenterology & Hepatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan; Taiwan Association of the Study of Small Intestinal Disease, Taoyuan, Taiwan; Chang Gung Microbiota Therapy Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan.
3 Department of Dermatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan; Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan. Electronic address: huang3764@mail2000.com.tw.