Simone Marnitz*, Volker Budach, Friederike Weißer, Elena Burova, Bernhard Gebauer, Filiberto G Vercellino and Christhardt Köhler
* Corresponding author: Simone Marnitz simone.marnitz@charite.de
Radiation Oncology 2012, 7:109 doi:10.1186/1748-717X-7-109