Chatton, A., and B. Kayser. “Self-Reported Health, Physical Activity and Socio-Economic Status of Middle-Aged and Elderly Participants in a Popular Road Running Race in Switzerland: Better off Than the General Population?”. Swiss Medical Weekly, vol. 143, no. 0102, Dec. 2012, p. w13710, doi:10.4414/smw.2013.13710.