C Nestle-Kraemling*, N Kübler, W Janni, S Braunstein, W Budach, E Bölke, C Matuschek and R Depprich
* Corresponding author: C Nestle-Kraemling c.nestle-kraemling@sana-duesseldorf.de
European Journal of Medical Research 2011, 16:553-556 doi:10.1186/2047-783X-16-12-553