Abdominal Pain

• Korea University Ansan Hospital — Ansan, South Korea
• Hallym University Sacred Heart Hospital — Anyang, South Korea
• Kangwon National University Hospital — Chuncheon, South Korea
• Gachon University Gil Hospital — Incheon, South Korea

• Örebro University — Örebro, Närke, Sweden

• Radboud University Nijmegen Medical Centre — Nijmegen, Netherlands

• Radboud University Nijmegen Medical Centre — Nijmegen, Netherlands

• Mayo Clinic — Scottsdale, Arizona, United States
• Mayo Clinic Jacksonville — Jacksonville, Florida, United States
• Northwestern University Chicago — Chicago, Illinois, United States
• Mayo Clinic — Rochester, Minnesota, United States

• Department of Infectious Diseases, Aalborg Hospital — Aalborg, Denmark

• Duke University Medical Center — Durham, North Carolina, United States

• Cooper University Hospital — Camden, New Jersey, United States

• Child and Adolescent Psychiatry — Stockholm, Sweden

Not specified