Efficacy and safety of a new low-volume PEG with citrate and simethicone bowel preparation for colonoscopy (Clensia): a multicenter randomized observer-blind clinical trial vs. a l... oleh Patrizia Kump, Cesare Hassan, Cristiano Spada, Eva Brownstone, Christian Datz, Michael Haefner, Friedrich Renner, Rainer Schoefl, Florian Schreiber