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Bretagnol F, Panis Y, Rullier E, Rouanet P, Berdah S, Dousset B, Portier G, Benoist S, Chipponi J, Vicaut E; French Research Group of Rectal Cancer Surgery (GRECCAR).Bretagnol F, et al.Ann Surg. 2010 Nov;252(5):863-8. doi: 10.1097/SLA.0b013e3181fd8ea9.Ann Surg. 2010.PMID: 21037443Clinical Trial.