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Sjoerdsma, W. (author), Meijer, D.W. (author), Jansen, A. (author), Den Boer, K.T. (author), Grimbergen, C.A. (author)Purpose: To determine the most efficient technique for performing a colectomy, we used the methodology of time-motion analysis. Methods: The efficiency of five hand-assisted and six regular laparoscopic colectomies and one open colectomy, performed by four surgeons in three different hospitals, was measured. The open colectomy was analyzed as a...journal article 2000