[1] Sun Yat Sen Univ, Div Neurosci, Dept Histol & Embryol, Zhongshan Sch Med, Guangzhou 510080, Guangdong, Peoples R China
[2] Sun Yat Sen Univ, Affiliated Hosp 1, Dept Acupuncture, Guangzhou 510080, Guangdong, Peoples R China
[3] Jinan Univ, Coll Med, Dept Anat, Guangzhou 510632, Guangdong, Peoples R China
[4] Sun Yat Sen Univ, Inst Spinal Cord Injury, Guangzhou 510120, Guangdong, Peoples R China