1729-519X 1729-519X S1729-519X2019000200371 Perú Peru Cuba 00 04 2019 00 04 2019 18 2 371 375 1 2018 17 6 6 849-53 2 2018 18 1 1 3 2017 34 1 1 70-1 4 2013 94 3 3 817-31 5 2014 31 3 3 424-30 6 2018 19 2 2 135-41