ecrin-mdr-crcClinical2015colorectal tumorColorectal TumorObservationalhttps://newmdr.ecrin.org/Study/2631112Japan7ECRIN MDRCompletedfalseThe observational study on the safety of dexmedetomidine during endoscopic submucosal dissection for colorectal tumorPrimary outcome(s): Patient’s circulation and Respiration during ESD for colorectal tumor2015-07-152631112JPRN-UMIN000015786