1. Department of Stomatology, The Second Hospital of Yulin City, Xi'an Jiaotong University Medical School, Yulin, Shaanxi 719000, P.R. China
2. Disinfection Supply Center, The Second Hospital of Yulin City, Xi'an Jiaotong University Medical School, Yulin, Shaanxi 719000, P.R. China
3. Department of Oral and Maxillofacial Surgery, The 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu 730050, P.R. China
4. Department of Head and Neck Cancer Surgery, Stomatological Hospital affiliated to Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
5. Department of Pharmacy, Yulin First Hospital of Shaanxi Province, Yulin, Shaanxi 719000, P.R. China