Effect of pneumoperitoneum on hemodynamics and inspiratory pressures during NOTES: An experimental, controlled study. - Delius,S von.; Huber,W.; Feussner,H.; Wilhelm,D.; Karagianni,A.; Henke,J.; Preißel,A.; Schneider,A.; Schmid,R.M.; Meining,A. (Endoscopy, 2007)