1. West China College of Stomatology, Sichuan University; Department of Orthodontics; No. 14, Section Three, Ren Min Nan Road Chengdu Sichuan China 610041
2. West China College of Stomatology, Sichuan University; Department of Orthodontics, State Key Laboratory of Oral Diseases; No. 14, Section Three, Ren Min Nan Road Chengdu Sichuan China 610041
3. University Hospitals Bristol NHS Foundation Trust; South West Cleft Unit; Lower Maudlin Street Bristol UK BS1 2LY
4. West China School of Medicine, Sichuan University; Chinese Evidence-Based Medicine Center; No. 37, Guo Xue Xiang Chengdu Sichuan China 610041
5. Kenyatta National Hospital; Department of Orthodontics; PO Box 20723 Nairobi Kenya 00202
6. Xuzhou Medical College; Faculty of Stomatology; 209 Tongshan Road Xuzhou Jiiangsu Province China 221004
7. West China College of Stomatology, Sichuan University; Department of Cleft Lip and Palate Surgery; No. 14, Section Three, Ren Min Nan Road Chengdu Sichuan China 610041