1. Department of Oral and Maxillofacial Surgery, Siloam Hospital Lippo Village, University of Pelita Harapan, Jakarta, Indonesia
2. Department of Oral and Maxillofacial Surgery, Sardjito Hospital, Yogyakarta, Indonesia
3. Private Practicioner, Medical Doctor, Las Vegas
4. Faculty of Medicine, University of Pelita Harapan, Jakarta, Indonesia
5. Department of Oral and Maxillofacial Surgery, Technische Universität, München, Germany