**Author details**

Mingyong Gao1,7, Jiasong Guo5 , Gilberto K. K. Leung6 and Wutian Wu1,2,3,4

1 Department of Anatomy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China

2 State Key Laboratory of Brain and Cognitive Sciences, China

3 Research Center of Reproduction, Development and Growth, Li Ka Shing Faculty of Medi‐ cine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China

4 Joint Laboratory for Brain Function and Health (BFAH), Jinan University and The Univer‐ sity of Hong Kong, Guangzhou, China

5 Department of Histology and Embryology, Southern Medical University, Guangzhou, China

6 Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China

7 Department of Orthopeadics, Renmin hospital of Wuhan University, Wuhan, China
