1. Department of Prosthodontics, The First Affiliated Hospital of Xinjiang Medical University, Affiliated Stomatological Hospital of Xinjiang Medical University, Stomatology Research Institute of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, China (mainland)
2. Dental Implant Center, The First People’s Hospital of Xining, Xining, Qinghai, China (mainland)