1. Department of Pediatric Dentistry, School and Hospital of Stomatology, Kunming Medical University, Kunming, Yunnan, Republic of China.
2. Yunnan Key Laboratory of Stomatology, Kunming Medical University, Kunming, Yunnan, Republic of China.
3. Department of Orthodontics, School and Hospital of Stomatology, Kunming Medical University, Kunming, Yunnan, Republic of China.
4. Department of Preventive Dentistry, School and Hospital of Stomatology, Kunming Medical University, Kunming, Yunnan, Republic of China.