1. Department of Oral and Maxillofacial Surgery, Hasanuddin University, Makassar, Indonesia
2. Department of Oral and Maxillofacial Surgery, University of Toyama, Toyama, Japan
3. Department of Oral and Maxillofacial Surgery, Osaka Medical and Pharmaceutical University, Osaka, Japan
4. Department of Oral and Maxillofacial Surgery, Padjadjaran University, Bandung, Indonesia