Proton pump inhibitors increase the risk of cholecystitis: a population-based case–control study. Issue 7 (17th July 2018) - Chuang, Shih-Chieh; Lin, Che-Chen; Peng, Cheng-Yuan; Huang, Wen-Hsin; Su, Wen-Pang; Lai, Shih-Wei; Lai, Hsueh-Chou