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Ovalle A, López PJ, Guelfand M, Zubieta R.Ovalle A, et al. Among authors: guelfand m.Rev Chil Pediatr. 2016 May-Jun;87(3):175-9. doi: 10.1016/j.rchipe.2015.06.022. Epub 2015 Oct 17.Rev Chil Pediatr. 2016.PMID: 26481835Free article.Spanish.
Guelfand M, Santos M, Olivos M, Ovalle A.Guelfand M, et al.Pediatr Surg Int. 2012 Jul;28(7):673-6. doi: 10.1007/s00383-012-3092-8. Epub 2012 Apr 19.Pediatr Surg Int. 2012.PMID: 22526554
García I, Muñoz R, Guelfand M.García I, et al. Among authors: guelfand m.Rev Chil Pediatr. 2014 Oct;85(5):594-8. doi: 10.4067/S0370-41062014000500011.Rev Chil Pediatr. 2014.PMID: 25697437Free article.Spanish.
Guelfand M, Harding C.Guelfand M, et al.J Laparoendosc Adv Surg Tech A. 2021 Oct;31(10):1185-1194. doi: 10.1089/lap.2021.0395. Epub 2021 Aug 6.J Laparoendosc Adv Surg Tech A. 2021.PMID: 34357817