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Thomas Rotthoff*, Martin S Ostapczuk, Judith de Bruin, Klaus-Dietrich Kröncke, Ulrich Decking, Matthias Schneider and Stefanie Ritz-Timme
* Corresponding author: Thomas Rotthoff rotthoff@med.uni-duesseldorf.de
BMC Medical Education 2012, 12:109 doi:10.1186/1472-6920-12-109