Letter from Taiwan

Affiliations

• ¹ Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
• ² Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
• ³ Department of Occupational and Environmental Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.