0003-3170 0003-3170 S0003-31702021000400001 10.20960/angiologia.00141 Spain 00 08 2021 00 08 2021 73 4 169 172 1 1975 2 1997 225 5 5 445-58 3 1904 15 267-75 4 2011 54 2 2 571-4 5 1988 155 3 3 420-4 6 2019 71 2 2 81-3 7 2014 66 3 3 146-8 8 1995 9 Suppl Suppl S1-6