1137-6627 1137-6627 S1137-66272017000100153 10.23938/assn.0015 Spain Spain 00 04 2017 00 04 2017 40 1 153 154 1 2016 39 99-104 2 2015 27 150-4 3 2009 132 465-75 4 5 2015 27 113-20 6 2015 27 75-81