1. Iwate Tohoku Medical Megabank Organization, Iwate Medical University, Shiwa 020-3694, Japan
2. Department of Clinical Genetics, School of Medicine, Iwate Medical University, Iwate 020-8505, Japan
3. Tohoku Medical Megabank Organization, Tohoku University, Sendai 980-0872, Japan
4. Departments of Medical Genetics and Genomics, School of Medicine, Sapporo Medical University, Sapporo 060-8556, Japan