Pain

• Instytut "Centrum Zdrowia Matki Polki" (Institute "Mother's Memorial Hospital") — Lodz, Poland
• Klinika Chirurgii i Traumatologii Dzieciecej - Dzieciecy Szpital Kliniczny im. prof. Antoniego Gebali — Lublin, Poland
• Regional Hospital of Ludwika Rydygiera in Torun — Torun, Poland
• Samodzielny Publiczny Szpital Kliniczny nr 1 we Wroclawiu - Independent Public Clinical Hospital No. 1 in Wroclaw — Wroclaw, Poland

• Beth Israel Deaconess Medical Center — Boston, Massachusetts, United States

• Diex Recherche Montreal Inc — Montreal, Quebec, Canada
• Algorithme Pharma — Montreal, Quebec, Canada
• Diex Recherche Sherbrooke Inc — Sherbrooke, Quebec, Canada

Not specified

• UNIVERSITY OF DEBRECEN FACULTY OF MEDICINE Department of Anesthesiology and Intensive Care — Debrecen, Hajdú-Bihar, Hungary

• University of Sao Paulo — Bauru, São Paulo, Brazil

• Northwestern University Feinberg School of Medicine — Chicago, Illinois, United States

• Dep of Urology Bern University Hospital — Bern, Switzerland

• Vince and Associates Clinical Research, Inc. — Overland Park, Kansas, United States
• CRI Lifetree — Philadelphia, Pennsylvania, United States
• CRI Lifetree (Lifetree Clinical Research) — Salt Lake City, Utah, United States

• Alabama Orthopaedic Center - Research — Birmingham, Alabama, United States
• Coastal Clinical Research, Inc. — Mobile, Alabama, United States
• Arizona Research Center — Phoenix, Arizona, United States
• Neuro-Pain Medical Center — Fresno, California, United States