IW‐3718, a Novel Gastric‐Retentive Bile Acid Sequestrant, Improved Symptoms of Refractory GERD in a Double‐Blind, Placebo‐Controlled Phase 2a Study: 1661. (October 2015) - Vaezi, Michael F.; Fass, Ronnie; Reasner, David; Hall, Michael; Olson, Tracy; Currie, Mark; Lavins, Bernard J.