Development and evaluation the safety of traction clip for colorectal endoscopic submucosal dissection.
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Interventions: We study durablity and keeping quality of traction clip for colorectal ESD. Primary outcome(s): From May 1st, 2011 to March 31, 2013 Target cases are 50. Calcurate the interval from the date maked traction clip to colorectal ESD. Evaluate the safty and durabillty of traction clip for colorectal ESD. Study Design: Single arm Non-randomized
创建时间：
2012-03-15
