1. Wuhan Hospital of Traditional Chinese Medicine, Department of Stomatology, No. 303 Sixin Avenue, Hanyang, Wuhan 430000, Hubei, China
2. Wuchang Hospital Affiliated to Wuhan University of Science and Technology (Stomatology), No. 116 Yangyuan Street, Wuchang District, Wuhan 430063, Hubei, China
3. Wuhan 9th Hospital, Department Stomatology, No. 20, Jilin Street, Qingshan District, Wuhan 430080, Hubei, China