1. Department of Oral and Maxillofacial Surgery, Hallym University Kangnam Sacred Heart Hospital, Hallym University Medical Center, Seoul 07441, Republic of Korea
2. Department of Oral and Maxillofacial Surgery, Bestian Dental Clinics, Seoul 06218, Republic of Korea
3. Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung 28644, Republic of Korea
4. Biomedical, Surgical and Oral Sciences Department, Maxillofacial and Dental Unit, School of Dentistry, University of Milan, 20122 Milan, Italy