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Osvaldt AB, Wendt LR, Bersch VP, Backes AN, de Cássia A Schumacher R, Edelweiss MI, Rohde L.Osvaldt AB, et al. Among authors: bersch vp.Surgery. 2006 Nov;140(5):803-9. doi: 10.1016/j.surg.2006.02.012.Surgery. 2006.PMID: 17084724