1. Inner Mongolia University for The Nationalities, Tongliao, Inner Mongolia, China;
2. Department of Orthopedics, Affiliated Hospital of Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia, China;
3. Tong Liao City Hospital, Tongliao, Inner Mongolia, China;
4. Department of Breast Surgery, The First Hospital of Jilin University, Changchun, Jilin, China