Saskia Ditisheim, Emiliano Giostra, Pierre R Burkhard, Nicolas Goossens, Gilles Mentha, Antoine Hadengue and Laurent Spahr*
* Corresponding author: Laurent Spahr laurent.spahr@hcuge.ch
BMC Gastroenterology 2011, 11:134 doi:10.1186/1471-230X-11-134