1. Department of Stomatology, Zhejiang Hospital , Hangzhou 310013 , Zhejiang , China
2. Department of Dermatology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou , Zhejiang , China
3. Department of Stomatology, Zhejiang Provincial People’s Hospital, People’s Hospital of Hangzhou Medical College , No. 158 Shangtang Road , Hangzhou 310014 , Zhejiang , China
4. Department of Stomatology, Zhejiang Hospital , No. 12 Lingyin Road , Hangzhou 310013 , Zhejiang , China