Chronic Fatigue Syndrome

• Lincolnshire Hospital Foundation Trust — Lincolnshire, United Kingdom
• Royal London Hospital for Integrated Medicine — London, United Kingdom

• VA Medical Center, Northport — Northport, New York, United States

• Duke University — Durham, North Carolina, United States

• Department of Oncology, Haukeland University Hospital — Bergen, Norway

• Georgetown University Hospital, 3800 Reservoir Rd NW — Washington D.C., District of Columbia, United States

• Kangbuk Samsung Hospital — Seoul, South Korea
• Ajou University Hospital — Suwon, South Korea

• University Medical Center St. Radboud — Nijmegen, Netherlands
• Wilhelmina Childrens' Hospital (University Medical Center Utrecht) — Utrecht, Netherlands

Not specified

• Clinic of Anesthesiology, Dept. of Pain — Ulm, Germany

• Duke University Medical Center - Insomnia and Sleep Disorders Lab — Durham, North Carolina, United States