1. Service Psychologique, Solidarité Jeunes asbl—Haus 13, 48, rue Victor Hugo, L-4140 Esch-sur-Alzette, Luxembourg
2. Institute for Health and Behaviour, Department of Behavioural and Cognitive Sciences, University of Luxembourg, Campus Belval, MSH, 11 Porte des Sciences, L-4366 Esch-sur-Alzette, Luxembourg