Oral sodium phosphate versus sulfate-free polyethylene glycol electrolyte lavage solution in outpatient preparation for colonoscopy: a prospective comparison
Gastrointestinal Endoscopy. 1996;43(1):42-48 
Re: polyethylene glycol versus sodium phosphate mechanic bowel preparation in elective colorectal surgery
The American Journal of Surgery. 2008;195(5):717
Meta-analysis: randomized controlled trials of 4-L polyethylene glycol and sodium phosphate solution as bowel preparation for colonoscopy
Alimentary Pharmacology & Therapeutics. 2010;32(2):171-181
A prospective randomized blinded comparison of sodium phosphate and polyethylene glycol-electrolyte solution for safe bowel cleansing
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Comparison of a new sulfate-free polyethylene glycol electrolyte lavage solution versus a standard solution for colonoscopy cleansing
Gastrointestinal Endoscopy. 1990;36(3):285-289
Meta-analysis and cost comparison of polyethylene glycol lavage versus sodium phosphate for colonoscopy preparation
Gastrointestinal Endoscopy. 1998;48(3):276-282
Are sodium phosphate tablets better than polyethylene glycol solution plus bisacodyl tablets for bowel preparation?
Nature Clinical Practice Gastroenterology & Hepatology. 2008;5(6):296-297
Oral sulfate solution versus low‐volume polyethylene glycol for bowel preparation: Meta‐analysis of randomized controlled trials
Digestive Endoscopy. 2021;34(4):721-728
Colonic Purgation for Screening Colonoscopy: Comparison of Polyethylene Glycol Electrolyte Solution, 2-Dose Sodium Phosphate and 3-Dose Sodium Phosphate
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Prospective, randomized trial comparing sodium phosphate solution with polyethylene glycol–electrolyte lavage for colonoscopy preparation
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