Esophageal Motility Disorders

• Otolaryngology Department of Santa Casa School of Medicine and Hospitals of São Paulo Brazil — São Paulo, Brazil

• Hospital Santa Rosa — Cuiabá, Mato Grosso, Brazil

• Seoul National University Bundang Hospital — Seongnam-si, Gyeonggi-do, South Korea

Not specified

• Alfred Hospital — Melbourne, Victoria, Australia

• University of Wisconsin Hospital and Clinics — Madison, Wisconsin, United States

• Anaheim, California, United States
• Los Angeles, California, United States
• Orange, California, United States
• San Diego, California, United States

• University of Bari — Bari, BA, Italy
• Ospedale Sant'Orsola Malpighi — Bologna, BO, Italy
• Arcispedale S. Anna — Ferrara, FE, Italy
• Ospedale Civile — Crotone, KR, Italy

• Research site — Moscow, Russia

Not specified