1. Trauma and Microsurgery Center, Toyohashi Municipal Hospital, Toyohashi, Aichi, Japan
2. Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, USA, IL
3. Department of Pathology, Toyohashi Municipal Hospital, Toyohashi, Aichi, Japan
4. Department of Orthopedic Surgery, Toyohashi Municipal Hospital, Toyohashi, Aichi, Japan