1. Department of Biomedical EngineeringMaterials Research InstituteThe Huck Institutes of the Life SciencesThe Pennsylvania State University University Park PA 16802 USA
2. Academy of OrthopedicsGuangdong ProvinceProvincial Key Laboratory of Bone and Joint Degenerative DiseasesThe Third Affiliated Hospital of Southern Medical University Guangzhou 510280 China
3. Department of Cell BiologyKey Laboratory of Mental Health of the Ministry of EducationSchool of Basic Medical SciencesSouthern Medical University Guangzhou 510515 China