1. Department of Orthopaedic Surgery, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan.
2. Japan Tissue Engineering Co., Ltd., Gamagori, Japan.
3. Medical Center for Translational and Clinical Research, Hiroshima University Hospital, Hiroshima, Japan.
4. Hiroshima University, Higashihiroshima, Japan.