Acknowledgements
We thank all adolescents participating in the study as well as the teachers and companies for their collaboration in organizing the local examinations.
Full list of consortium members:Markus Anliker 
Contact:VASCage, Research Centre on Vascular Ageing and StrokeManuela Bock-Bartl (CFO)manuela.bock-bartl@vascage.atAnichstraße 35, 6020-Innsbruck, Austria