Nora Celebi, Rodoula Tsouraki, Corinna Engel, Friederike Holderried, Reimer Riessen and Peter Weyrich*
* Corresponding author: Peter Weyrich peter.weyrich@med.uni-tuebingen.de
BMC Medical Education 2012, 12:24 doi:10.1186/1472-6920-12-24