Retraction notice to “Long-term outcomes of per-oral endoscopic myotomy in patients with achalasia with a minimum follow-up of 2 years: an international multicenter study”

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://ift.tt/2GNuKz7 article has been retracted due to overlapping/duplicate material.Data from some patients from this study have previously been published in other journals without cross-referencing. Twenty patients overlap with a paper by Kumbhari et al.1 Thirty-five patients overlap with the study by Ngamruengphong et al.2

http://ift.tt/2u559PD