1. Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
2. Department of Internal Medicine, Nagasaki National Hospital, Nagasaki City, Nagasaki, Japan
3. Department of Nutritional Science, Faculty of Nursing and Nutrition, Siebold Campus, University of Nagasaki, Nagasaki City, Nagasaki, Japan