1. First Department of Surgery (K.F., H.A., M.U., M.O., T.O., K.S., M.Su., S.M.), Tohoku University School of Medicine, Sendai 980-8575, Japan
2. Department of Neurophysiology (K.F., H.A., T.N., M.O., T.S., N.A., M.Se., T.A.), Tohoku University School of Medicine, Sendai 980-8575, Japan
3. Department of Pediatrics (T.N., Y.K., K.I.), Tohoku University School of Medicine, Sendai 980-8575, Japan
4. Department of Analytical and Metabolic Research Laboratories, Sankyo Co., Ltd. (T.T.), Tokyo 140-8710, Japan
5. Third Department of Internal Medicine (N.A., T.S.), Tohoku University School of Medicine, Sendai 980-8575, Japan
6. Second Department of Internal Medicine (T.S., S.I.), Tohoku University School of Medicine, Sendai 980-8575, Japan
7. Department of Division of Nephrology, Faculty of Medicine, University of Tokyo (M.T.), Tokyo 113-8655, Japan
8. Department of Molecular Pharmacology (K.N.), Tohoku University School of Medicine, Sendai 980-8575, Japan