[1] Univ Melbourne, Dept Gen Practice, Melbourne, Vic 3010, Australia
[2] Fondacija Fami, Sarajevo, Bosnia & Herceg
[3] Univ Geneva, Youth Clin, Adolescent & Young Adult Program, Dept Pediat, CH-1211 Geneva 4, Switzerland
[4] Univ Geneva, Dept Community Med & Primary Care, CH-1211 Geneva 4, Switzerland
[5] Univ Hosp Geneva, Youth Clin, Adolescent & Young Adult Program, Dept Pediat, Geneva, Switzerland
[6] Univ Hosp Geneva, Dept Community Med, Geneva, Switzerland