1. Laryngopharyngeal Reflux Study Group of Young Otolaryngologists, International Federation of Oto-rhino-laryngological Societies, Paris, France
2. Department of Anatomy and Experimental Oncology, Mons School of Medicine, UMONS Research Institute for Health Sciences and Technology, University of Mons, Mons, Belgium
3. Laboratory of Phonetics, Faculty of Psychology, Research Institute for Language Sciences and Technology, University of Mons, Mons, Belgium
4. Department of Otorhinolaryngology and Head and Neck Surgery, CHU Saint-Pierre, Faculty of Medicine, University Libre de Bruxelles, Brussels, Belgium
5. Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
6. Department of Otorhinolaryngology and Head and Neck Surgery, American University of Beirut Medical Center, Beirut, Lebanon
7. Department of Biomedical and Clinical Sciences, Phoniatric Unit, L. Sacco Hospital, University of Milan, Milan, Italy
8. Department of Otorhinolaryngology and Head and Neck Surgery, Thessaloniki Medical School, Thessaloniki, Greece
9. Division of Phoniatrics and Audiology, Department of Mental and Physical Health and Preventive Medicine, University of Naples SUN, Naples, Italy
10. Department of Otorhinolaryngology and Head and Neck Surgery, Hospital Complex of Santiago de Compostela, Santiago de Compostela, Spain
11. Department of Otorhinolaryngology and Head and Neck Surgery, Foch Hospital, Paris, France
12. Department of Otorhinolaryngology and Head and Neck Surgery, CHU de Liège, Faculty of Medicine, University of Liège, Liège, Belgium
13. Department of Otorhinolaryngology and Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul, Korea
14. Division of Gastroenterology, Hepatology, Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee, USA