John Marshall

Bowel preparation with split-dose polyethylene glycol before colonoscopy: a meta-analysis of randomized controlled trials

Systematic review or meta-analysis · Gastrointestinal Endoscopy · 2011 · 216 citations

Prospective, randomized trial comparing sodium phosphate solution with polyethylene glycol-electrolyte lavage for colonoscopy preparation

Gastrointestinal Endoscopy · 1993 · First of 4 authors · 188 citations