Depressive Disorder, Major

• GSK Investigational Site — Plovdiv, Bulgaria
• GSK Investigational Site — Sofia, Bulgaria
• GSK Investigational Site — Miramichi, New Brunswick, Canada
• GSK Investigational Site — Burlington, Ontario, Canada

• Massachusetts General Hospital — Boston, Massachusetts, United States

• CA004 — Edmonton, Alberta, Canada
• CA005 — Kelowna, British Columbia, Canada
• CA006 — St. John's, Newfoundland and Labrador, Canada
• CA007 — Halifax, Nova Scotia, Canada

• University of Utah/The Brain Institute — Salt Lake City, Utah, United States

Not specified

• University of Pittsburgh Medical Center — Pittsburgh, Pennsylvania, United States

• Univ of Florida — Gainesville, Florida, United States

• Aalborg University — Aalborg, North Jutland, Denmark
• CCBR — Aalborg, North Jutland, Denmark

• UCLA Semel Institute - Neuropsychiatric Institute (NPI) — Los Angeles, California, United States

• Massachusetts General Hospital — Boston, Massachusetts, United States