Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
Xi-Zhang Lin
Correspondence: Address correspondence to: Xi-Zhang Lin, MD, Department of Internal Medicine, National Cheng Kung University Hospital, No.138, Sheng Li Road, Tainan 704, Taiwan.; Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan