Sleep Initiation and Maintenance Disorders

• GSK Investigational Site — Mannheim, Baden-Wurttemberg, Germany
• GSK Investigational Site — Cottbus, Brandenburg, Germany
• GSK Investigational Site — Hamburg, Free and Hanseatic City of Hamburg, Germany
• GSK Investigational Site — Schwerin, Mecklenburg-Vorpommern, Germany

• GSK Investigational Site — Guildford, Surrey, United Kingdom

• Dankook University Hospital — Cheonan, Chungcheongnam, South Korea
• Keimyung University, Dongsan Medical Center — Daegu, South Korea
• Kangwon National University Hospital — Chuncheon, Gangwon-do, South Korea
• Chonnam National University Hospital — Gwangju, South Korea

Not specified

• Birmingham, Alabama, United States
• Mobile, Alabama, United States
• Phoenix, Arizona, United States
• Tempe, Arizona, United States

Not specified

• University of Washington — Seattle, Washington, United States

• University of Virginia Health System, Behavioral Health and Technology — Charlottesville, Virginia, United States

• Taipei, Taiwan

• Sanofi-Aventis Administrative Office — Bridgewater, New Jersey, United States