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Pera M, Delgado S, García-Valdecasas JC, Pera M, Castells A, Piqué JM, Bombuy E, Lacy AM.Pera M, et al. Among authors: lacy am.Surg Endosc. 2002 Apr;16(4):603-6. doi: 10.1007/s00464-001-9097-3. Epub 2001 Dec 10.Surg Endosc. 2002.PMID: 11972197