Dyssomnias

• Second Department of Internal Medicine, Nagasaki University School of Medicine — Nagasaki, Japan

Not specified

• Arkansas Children's Hospital Research Center Inc. — Little Rock, Arkansas, United States
• University of California at San Diego — La Jolla, California, United States
• National Jewish Medical and Research Center — Denver, Colorado, United States
• Louisiana State University Health Sciences Center — Shreveport, Louisiana, United States

• Clinical Research Center- Hopital Cardiologique — Lyon, France

• Sleep Laboratory; Department of Psychiatry, Geneva University Hospital — Chêne-Bourg, Canton of Geneva, Switzerland

• University of California San Diego — San Diego, California, United States

• McGill University Health Centre, Pain Centre — Montreal, Quebec, Canada

• UNC Gastroenterology and UNC Sleep Disorders Center — Chapel Hill, North Carolina, United States

• Utrecht Institute for Pharmaceutical Sciences — Utrecht, Netherlands

• Hospital Univ Arnau de Vilanova — Lleida, Catalonia, Spain