Abdominal Pain

• Angers Centre Hospitalier Universitaire (CHU) — Angers, France
• Centre Hospitalier de Cholet — Cholet, France
• Centre Hospitalier de Saumur — Saumur, France

• University of Louisville — Louisville, Kentucky, United States

• University Hospital of Split — Split, Croatia

• The Second Affiliated Hospital Zhejiang University School of Medicine — Hangzhou, Zhejiang, China

• Alberta Children's Hospital Emergency Department — Calgary, Alberta, Canada

• Brigham and Women's Hospital — Boston, Massachusetts, United States

• Medical University in Warsaw — Warsaw, Poland

• Yale School of Nursing — New Haven, Connecticut, United States

• Stanford University — Stanford, California, United States

Not specified