1. From the Department of Trauma and Hand Surgery, University
Hospital, Düsseldorf, Germany, the University of Freiburg, Institute
of Medical Biometry and Medical Informatics, Germany, the Cochrane Centre,
Freiburg, Germany, the Institute for Research in Operative Medicine, University
of Witten/Herdecke, Germany and the Study Centre of the German Surgical Society
-SDGC-, University of Heidelberg, Germany