1. Department of Intense Care Unit, Yantai Yuhuangding Hospital, No. 20 Yudong Road, Zhifu District, Yantai City, 264000 Shandong Province, China
2. The Department of Joint Orthopaedics, Yantai Yuhuangding Hospital, No. 20 Yudong Road, Zhifu District, Yantai City, 264000 Shandong Province, China