1Faculty of Medicine, Department of Public Health, Osaka City University, Osaka, Japan
2Department of Rehabilitation Medicine, Kyushu University Hospital, Fukuoka, Japan
3 Department of Orthopaedic Surgery, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
*Corresponding Author:
Kyoko Kondo, Faculty of Medicine, Department of Public Health, Osaka City University, Japan, Tel: +81-6-6645-3756, Fax: +81-6-6645-3757 Email: