Sleep Initiation and Maintenance Disorders

• University of Michigan Health System — Ann Arbor, Michigan, United States

• Western Phychiatric Institute and Clinic, University of Pittsburgh Medical Center — Pittsburgh, Pennsylvania, United States

• Karolinska Institutet and Gustavsberg primary care center — Stockholm, Stockholm County, Sweden

• University of Zurich — Zurich, Switzerland

• Osaka, Japan
• Tokyo, Japan

• Philadelphia Veterans Affairs Medical Center — Philadelphia, Pennsylvania, United States

• University of Rochester Medical Center — Rochester, New York, United States

Not specified

• University of Missouri, Department of Internal Medicine — Columbia, Missouri, United States

• Emory University — Atlanta, Georgia, United States