Pain, Postoperative

• VA Medical Center, Long Beach — Long Beach, California, United States
• VA San Diego Healthcare System, San Diego — San Diego, California, United States
• VA Medical Center, San Francisco — San Francisco, California, United States

• Oregon Health & Science University — Portland, Oregon, United States

• VA San Diego Healthcare System, San Diego, CA — San Diego, California, United States

• Walter Reed National Military Medical Center — Bethesda, Maryland, United States
• Duham VA Medical Center — Durham, North Carolina, United States

• Fredrik Sebelius — Lund, Sweden

• Danish Pain Research Center, Aarhus University Hospital — Aarhus, Denmark

• Navy Medical Center — San Diego, California, United States
• Walter Reed National Military Medical Center — Bethesda, Maryland, United States
• University of Tennessee Health Science Center — Memphis, Tennessee, United States

Not specified

• Paolo Maria Rossini — Roma, IT, Italy

• University of Lausanne Hospital CHUV — Lausanne, Canton of Vaud, Switzerland