Sperber, A.D., Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel; Bangdiwala, S.I., Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada, Population Health Research Institute, McMaster University, Hamilton, ON, Canada; Drossman, D.A., Center for Functional GI & Motility Disorders, University of North Carolina, Center for Education and Practice of Biopsychosocial Care, and Drossman Gastroenterology, Chapel Hill, NC, United States; Ghoshal, U.C., Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGI), Lucknow, India; Simren, M., Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Tack, J., Translational Research Center for Gastrointestinal Disorders (TARGID), University of Leuven, Leuven, Belgium; Whitehead, W.E., Center for Functional GI & Motility Disorders, University of North Carolina-Chapel Hill, Chapel Hill, NC, United States; Dumitrascu, D.L., Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania; Fang, X., Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Fukudo, S., Department of Behavioral Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan; Kellow, J., Discipline of Medicine, Northern Clinical School, University of Sydney, Sydney, Australia; Okeke, E., Department of Medicine, University of Jos, Jos University Teaching Hospital, Jos, Nigeria; Quigley, E.M.M., Lynda K. and David M. Underwood Center for Digestive Disorder, Gastroenterology and Hepatology, Houston Methodist Hospital and Weill Cornell Medical College, Houston, TX, United States; Schmulson, M., Laboratory of Liver, Pancreas and Motility (HIPAM), Unit of Research in Experimental Medicine, Faculty of Medicine, Universidad Nacional Autónoma de Mexico (UNAM). Hospital General de México, Mexico City, Mexico; Whorwell, P., Neurogastroenterology Unit, Manchester University NHS Foundation Trust, Wythenshawe Hospital, Manchester, United Kingdom; Archampong, T., Department of Medicine, University of Ghana School of Medicine and Dentistry, Accra, Ghana; Adibi, P., Integrative Functional Gastroenterology Research Center, Department of Internal Medicine, School of Medicine, Isfahan University of Medical SciencesIsfahan, Iran; Andresen, V., Department of Medicine, Israelitic Hospital, Hamburg, Germany; Benninga, M.A., Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Pediatric Gastroenterology, Amsterdam, The Netherlands, Netherlands; Bonaz, B., Service d'Hépato-Gastroentérologie, CHU Grenoble Alpes, Grenoble, France; Bor, S., Ege University School of Medicine, Division of Gastroenterology, Bornova Izmir, Turkey; Fernandez, L.B., “Centro Medico Dr. Bustos Fernandez”, Buenos Aires, Argentina; Choi, S.C., Department of Gastroenterology, School of Medicine, Wonkwang University, Iksan, South Korea; Corazziari, E.S., Department of Gastroenterology, Istituto Clinico Humanitas, Rozzano, Italy; Francisconi, C., Department of Internal Medicine, Universidade Federal do Rio Grande do Sul, Gastroenterology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil; Hani, A., Gastroenterology Unit, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá, Colombia; Lazebnik, L., Department of Outpatient Medicine, Faculty of Internal Medicine, Moscow State University of Medicine and Dentistry, Moscow, Russian Federation; Lee, Y.Y., School of Medical Sciences, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia; Mulak, A., Department of Gastroenterology and Hepatology, Wroclaw Medical University, Wroclaw, Poland; Rahman, M.M., Dhaka Medical College & Hospital, Dhaka, Bangladesh; Santos, J., Department of Gastroenterology, University Hospital Vall d'Hebron, Autonomous University of Barcelona & Neuro-Inmuno-Gastroenterology Lab, Vall d'Hebron Research Institute, Barcelona, Spain; Setshedi, M., Department of Medicine, Division of Gastroenterology, University of Cape Town, Cape Town, South Africa; Syam, A.F., Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, Universitas Indonesia/Cipto Mangunkusumo Hospital, Jakarta, Indonesia; Vanner, S., Gastrointestinal Diseases Research Unit, Kingston Health Science Centre, Queen's University, Kingston, ON, Canada; Wong, R.K., Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore; Lopez-Colombo, A., UMAE Hospital de Especialidades C.M.N. Manuel Avila Camacho, Puebla Pue, Mexico; Costa, V., Gastroenterology Unit, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá, Colombia; Dickman, R., Division of Gastroenterology, Rabin Medical Center, Sackler School of Medicine, Tel-Aviv, Israel; Kanazawa, M., Department of Behavioral Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan; Keshteli, A.H., CEGIIR-Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, AB, Canada; Khatun, R., Population Health Research Institute, McMaster University, Hamilton, ON, Canada; Maleki, I., Gut and Liver Research Center, Department of Internal Medicine, Mazandaran University of Medical Sciences, Sari, Iran; Poitras, P., CHUM, Université de Montréal, Montréal, QC, Canada; Pratap, N., KIMS Hospitals, Secunderabad, India; Stefanyuk, O., Department of Biochemical Markers of Chronic Non-Communicable Diseases Research National Medical Research Centre for Preventive Medicine, Moscow, Russian Federation; Thomson, S., Department of Medicine, Division of Gastroenterology, University of Cape Town, Cape Town, South Africa; Zeevenhooven, J., Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Pediatric Gastroenterology, Amsterdam, The Netherlands, Netherlands; Palsson, O.S., Center for Functional GI & Motility Disorders, University of North Carolina-Chapel Hill, Chapel Hill, NC, United States