1. Department of Nephrology, Nagasaki University Hospital, Nagasaki, Japan
2. Department of Nephrology, JCHO Isahaya General Hospital, Isahaya, Nagasaki, Japan
3. Department of Nephrology, Wajinkai Hospital, Nagasaki, Japan
4. Department of Respiratory Medicine, Unit of Basic Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan