1. School and Hospital of Stomatology, Tianjin Medical University, Tianjin Key Laboratory of Oral Soft and Hard Tissues Restoration and Regeneration, Tianjin 300070, China
2. Department of Pediatric Dentistry, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin 300041, China
3. General Hospital of Tianjin Medical University, Tianjin 300052, China
4. Second Hospital of Tianjin Medical University, Tianjin 300211, China