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Ruiz-Tovar J, Santos J, Arroyo A, Llavero C, Armañanzas L, López-Delgado A, Frangi A, Alcaide MJ, Candela F, Calpena R.Ruiz-Tovar J, et al. Among authors: calpena r.J Am Coll Surg. 2012 Feb;214(2):202-7. doi: 10.1016/j.jamcollsurg.2011.10.014.J Am Coll Surg. 2012.PMID: 22265220Clinical Trial.
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