1. Mood, Depression, and Suicidal Behaviour Unit; National Institute for Health and Welfare; Helsinki Finland
2. Psychiatry; City of Helsinki Health Centre; Helsinki Finland
3. Department of Public Health; Faculty of Medicine; University of Helsinki; Helsinki Finland
4. Department of Psychiatry; Helsinki University Central Hospital; District of Helsinki and Uusimaa; Helsinki Finland
5. Department of Psychiatry; New York State Psychiatric Institute and Columbia University; New York NY USA