Mathes Tim, Pieper Dawid
Institute for Research in Operative Medicine, Chair of Surgical Research, Faculty of Health, School of Medicine, Witten/Herdecke University, Ostmerheimer Str. 200, 51109 Cologne, Germany.
Institute for Research in Operative Medicine, Chair of Surgical Research, Faculty of Health, School of Medicine, Witten/Herdecke University, Ostmerheimer Str. 200, 51109 Cologne, Germany.
J Clin Epidemiol. 2018 Jan;93:84-87. doi: 10.1016/j.jclinepi.2017.09.016. Epub 2017 Sep 22.