1. Division of Sleep Surgery, Department of Otolaryngology–Head and Neck Surgery, School of Medicine, Stanford University, Stanford, California, USA
2. Department of Otolaryngology–Head and Neck Surgery, Faculty of Medicine, Mansoura University Mansoura, Egypt
3. Section of Pediatric Dentistry and Orthodontics, Division of Growth and Development, School of Dentistry, University of California–Los Angeles, Los Angeles, California, USA
4. Center of Excellence in Otolaryngology–Head and Neck Surgery, Rajavithi Hospital, College of Medicine, Rangsit University, Bangkok, Thailand
5. Department of Otolaryngology–Head and Neck Surgery, Kaiser Permanente, Santa Clara, California, USA