1. Department of Psychology and Logopedics; University of Helsinki; Helsinki Finland
2. Folkhälsan Research Center; Helsinki Finland
3. Helsinki Collegium for Advanced Studies; National Institute for Health and Welfare; Helsinki Finland
4. Children's Hospital; University of Helsinki, and Helsinki University Hospital; Helsinki Finland
5. Department of Psychology; University of Warwick; Coventry UK
6. Department of General Practice and Primary Health Care; University of Helsinki; Helsinki Finland
7. Helsinki University Hospital; Helsinki Finland
8. Vaasa Central Hospital; Vaasa Finland
9. Department of Obstetrics and Gynaecology; Oulu University Hospital and University of Oulu; Oulu Finland