0212-1611 0212-1611 S0212-16112020000800001 10.20960/nh.03399 Spain Spain 00 12 2020 00 12 2020 37 6 1093 1094 1 2015 12 259-70 2 on behalf of the PREDyCES researchers 2015 32 4 4 1830-6 3 Grupo de Trabajo 4 2018 5 2020 37 6 6 1201-8 6 2001 1 1 1 1-8