Association between Hashimoto’s thyroiditis and cholelithiasis: a retrospective cohort study in Taiwan Abstract Objective To investigate the relation of Hashimoto’s thyroiditis (HT) to cholelithiasis and cholecystectomy in a retrospective population-based study. Setting Cohort study. Participants We identified 1268 patients aged ≥20 years with HT between 2000 and 2010 as the study cohort. Primary and secondary outcome measures Patients without HT were...