1. Key Laboratory for Medical Tissue Regeneration of Henan Province; Xinxiang Medical University; Xinxiang City; Henan
2. Department of Orthopaedics; Third Affiliated Hospital; Xinxiang Medical University; Xinxiang City; Henan
3. Hi-Lex Corporation; Medical Device; Takarazuka City; Hyogo
4. Graduate School of Dental Medicine; Hokkaido University; Sapporo; Japan