1. Department of General and Women’s Medicine, Tokyo Women’s Medical University, Tokyo 162-8666, Japan
2. Department of Endocrinology and Metabolism, National Hospital Organization Sendai Medical Center, Miyagi 983-8520, Japan
3. Department of Nephrology and Endocrinology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
4. Health Administration Center, United Graduate School of Drug Discovery and Medical Information Sciences, Department of Endocrinology and Metabolism, Gifu University Hospital, Gifu University, Gifu 501-1193, Japan
5. Health Services Center, National Graduate Institute for Policy Studies, Tokyo 106-8677, Japan