Analgesia

• University of Saskatchewan — Saskatoon, Saskatchewan, Canada

• University Hospital Split — Split, Croatia

• Riland Academic Health Care Center — Old Westbury, New York, United States

• Emergency Department of Affiliated Hospital of Nantong University — Nantong, Jiangsu, China

Not specified

• Assiut university Hospital — Asyut, Egypt

• Mayo Clinic — Rochester, Minnesota, United States
• BC Women's Hospital — Vancouver, British Columbia, Canada

• Jena University Hospital — Jena, Germany
• Hospital General de Chihuahua Salvador Zubirán Anchondo — El Bajo, Chihuahua, Mexico
• Hospital Aranda de La Parra (Leon Guanajuato) — León, Guanajuato, Mexico
• Hospital Central Militar — Mexico City, Mexico

• Zagazig university hospital — Zagazig, Egypt

• University of Wisconsin Hospitals and Clinics (UWHC) — Madison, Wisconsin, United States