1. Department of Rehabilitation, Panasonic Health Insurance Organization, Matsushita Memorial Hospital, Osaka, Japan
2. Department of Physical Therapy, School of Health Sciences, Fukushima Medical University, Fukushima, Japan
3. Department of General Medicine, Panasonic Health Insurance Organization, Matsushita Memorial Hospital, Osaka, Japan
4. Department of Hematology, Panasonic Health Insurance Organization, Matsushita Memorial Hospital, Osaka, Japan