Oral sulfate-based versus low-volume polyethylene glycol-ascorbate regimens for colonoscopy preparation in the geriatric population: a systematic review and meta-analysis of randomized controlled trials. - Bardak AE; Teker G; Yalcin Y; Mitev S; Bardak AI; Istemihan Z; Ozturk NB; Krishnan S (Clinical endoscopy, 2026)