1. Department of Clinical Dentistry, Walailak University International College of Dentistry, Walailak University, Bangkok 10400, Thailand
2. Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
3. Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
4. Department of Prosthetic Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
5. Faculty of Science and Technology, Pokhara University, Kaski 33700, Nepal
6. Department of Basic Medical and Dental Sciences, Faculty of Dentistry, Zarqa University, Zarqa 13132, Jordan