ecrin-mdr-crcClinical2016Colon cancerColon CancerObservationalhttps://newmdr.ecrin.org/Study/2636285Japan6ECRIN MDRCompletedfalseSafety and efficacy of endoscopic tattooing using a short-length needle for preoperative localization in colorectal cancer surgery: a prospective studyPrimary outcome(s): The proportion of visible tattooing during laparoscopic surgery2016-06-152636285JPRN-UMIN000021012