1. Department of Medicine, Kawasaki Medical School, Okayama, Japan
2. Department of Cardiovascular Medicine, and Endocrinology and Metabolism, Faculty of Medicine, Tottori University, Tottori, Japan
3. Medicine Division, Nippon Boehringer Ingelheim Co. Ltd, Tokyo, Japan
4. Medicines Development Unit Japan and Medical Affairs, Eli Lilly Japan K.K., Kobe, Japan