1130-5274 1130-5274 S1130-52742020000300001 10.5093/clysa2020a31 Spain Spain 00 00 2020 00 00 2020 31 3 125 126 2020 31 2 2 77-83 Committee on Publication Ethics. (COPE) 2017 International DOI Foundation 2012 2019 128 6 6 500-9 2020 31 2 2 69-76