Perrin, T., L. . D. Trachsel, S. Schneiter, A. Menafoglio, S. Albrecht, T. Pirrello, P. Eser, L. Roten, B. Gojanovic, and M. Wilhelm. “Prevalence of Abnormal Electrocardiograms in Swiss Elite Athletes Detected With Modern Screening Criteria”. Swiss Medical Weekly, vol. 146, no. 5152, Dec. 2016, p. w14376, doi:10.4414/smw.2016.14376.