1. The Third Affiliated Hospital of Guangzhou Medical University; No. 63 Duobao Road Guangzhou 510150 P. R. China
2. Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine; School of Basic Medical Science; Zhejiang University; No. 866 Yuhangtang Road Hangzhou 310058 P. R. China
3. Translational Research Center for Regenerative Medicine and 3D Printing Technologies; Guangzhou Medical University; No. 63 Duobao Road Guangzhou 510150 P. R. China