Sleep Initiation and Maintenance Disorders

• 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

• 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

• Non-US study, principal location: — Gothenburg, Sweden

Not specified

• Non-US study, principal location: — Gothenburg, Sweden

• University of California, San Francisco — San Francisco, California, United States
• University of Minnesota Twin Cities Campus — Minneapolis, Minnesota, United States

Not specified