1134-928X 1134-928X S1134-928X2020000500239 s1134-928x2020000500008 Spain 00 00 2020 00 00 2020 31 4 239 240 1 2013 35 2 2 144-52 2 2017 33 2 2 1-13 3 2008 3 4 4 275-84 4 2013 39 69-86 5 2015 691-8 6 2018 89 7-15