[1] Univ Tampere, Sch Hlth Sci, FI-33014 Tampere, Finland
[2] Univ Tampere, PERLA Tampere Ctr Childhood Youth & Family Res, FI-33014 Tampere, Finland
[3] Pitkaniemi Hosp, Tampere Univ Hosp, Dept Adolescent Psychiat, FI-33380 Nokia, Finland
[4] Univ Jyvaskyla, Dept Psychol, POB 35, FI-40014 Jyvaskyla, Finland
[5] Univ Helsinki, Cicero Learning, POB 9, FI-00014 Helsinki, Finland
[6] Univ Halle Wittenberg, Fac Med, Inst Med Sociol, Magdeburger Str 8, D-06112 Halle, Saale, Germany
[7] Univ Nova Lisboa, Escola Nacl Saude Publ, Ave Padre Cruz, P-1600560 Lisbon, Portugal
[8] Univ Nova Lisboa, Ctr Invest Saude Publ, Ave Padre Cruz, P-1600560 Lisbon, Portugal
[9] Univ Cassino & Southern Lazio, Dept Human Sci Soc & Hlth, Via S Angelo Snc,Campus Folcara, I-03043 Cassino, FR, Italy
[10] Univ Amsterdam, Acad Med Ctr, Dept Publ Hlth, POB 22660, NL-1100 DD Amsterdam, Netherlands
[11] Catholic Univ Louvain, Inst Hlth & Soc, Clos Chapelle Champs 30-B1-30-15-05, B-1200 Brussels, Belgium