1 Department of Orthodontics, University of Puthisastra, Phnom Penh, Cambodia; Private Practice of Orthodontics in Phnom Penh; avenugopal@puthisastra. edu.kh.
2 Private Practice of Orthodontics in Manila, Philippines.
3 Department of Orthodontics, University of Homburg, Saar, Germany; Private Practice of Orthodontics in Traben-Trarbach, Germany.
4 Department of Orthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India.