[1] Med Univ Vienna, Ctr Publ Hlth, Dept Social & Prevent Med, Vienna, Austria
[2] Anglia Ruskin Univ, Cambridge Ctr Sport & Exercise Sci, Compass House, Cambridge, England
[3] Med Univ Vienna, Ctr Med Stat Informat & Intelligent Syst, Inst Outcomes Res, Spitalgasse 23, A-1090 Vienna, Austria
[4] Ludwig Boltzmann Cluster Arthrit & Rehabil, Vienna, Austria
[5] Washington Univ, Sch Med, Div Publ Hlth Sci, St Louis, MO USA
[6] Med Univ Vienna, Ctr Publ Hlth, Dept Epidemiol, Vienna, Austria
[7] UCL, Dept Behav Sci & Hlth, London, England
[8] Alberta Hlth Serv, Holy Cross Ctr, Dept Canc Epidemiol & Prevent Res, Calgary, AB, Canada
[9] Univ Calgary, Cumming Sch Med, Prevent Oncol & Community Hlth Sci, Calgary, AB, Canada