0003-3170 0003-3170 S0003-31702021000200005 10.20960/angiologia.00206 España 00 04 2021 00 04 2021 73 2 107 109 1 2009 2 1960 6 104-13 3 1963 32 Suppl Suppl 742-56 4 1952 14 1 1 91-100