1. Shenzhen Pingle Orthopaedic Hospital/Shenzhen Pingshan District Hospital of Traditional Chinese Medicine/Shenzhen Orthopaedic Hospital, Shenzhen City, Guangdong Province, China
2. The Fifth Affiliated Hospital of Southern Medical University, Guangzhou City, Guangdong Province, China
3. Shanghai Pudong New Area Luchaogang Community Health Service Center, Shanghai, China.