Hernia, Hiatal

• Sahlgrenska University Hospital — Gothenburg, Sweden
• Skåne University Hospital Lund — Lund, Sweden
• Nyköping Hospital — Nyköping, Sweden
• Ersta Hospital — Stockholm, Sweden

• Oulu University Hospital — Oulu, Finland

• NorthShore University HealthSystem — Evanston, Illinois, United States
• Providence Portland Medical Center / The Oregon Clinic — Portland, Oregon, United States

• Cleveland Clinic — Cleveland, Ohio, United States
• St Joseph's Healthcare, McMaster University — Hamilton, Ontario, Canada

• UC Davis Health — Sacramento, California, United States

• Pediatrics and Pediatric Surgery University Hospital, Faculty Of Medicine, Minia Universty — Minya, Egypt

• Asser Health Cluster — Abhā, 'Asir Region, Saudi Arabia

• Clinique Saint Michel — Toulon, France

• Riverside University Health System — Moreno Valley, California, United States

Not specified