S482 Evaluating Multiple Dosing Regimens for Proton Pump Inhibitors (PPI) for the Treatment of Gastroesophageal Reflux Disease (GERD): A Systematic Review and Meta-Analysis. (October 2022) - Barnhill, Katherine; Zhornitskiy, Alex; Yu, Kyung-Sang; Makaroff, Katherine; Fuller, Garth; Spiegel, Brennan; Gresham, Gillian