1. A randomized prospective trial comparing oral sodium phosphate with standard polyethylene glycol-based lavage solution (Golytely) in the preparation of patients for colonoscopy;Vanner;Am J Gastroenterol,1990
2. Prospective randomized trial comparing a new sodium phosphate-bisacodyl regimen with conventional PEG-ES lavage for outpatient colonoscopy preparation;Afridi;Gastrointest Endosc,1995
3. Prospective randomized endoscopic-blinded trial comparing pre colonoscopy bowel cleansing methods;Cohen;Dis Colon Rectum,1996
4. A comparison of the effectiveness and patient tolerance of oral sodium phosphate, castor oil, and the standard electrolyte lavage for colonoscopy or sigmoidoscopy preparation;Kolts;Am J Gastroenterol,1993
5. Prospective randomized trial comparing sodium phosphate solution with polyethylene glycol-electrolyte lavage for colonoscopy preparation;Marshall;Gastrointest Endosc,1993