2621018 ECAA extracranial carotid artery aneurysm 26 2621011 ECAA European Concerted Action on Anticoagulation 24 2621014 ECAA ethyl 4-chloroacetoacetate 5 2621016 ECAA extracranial carotid artery 3 2621015 ECAA early career anatomy academic 1 2621010 ECAA Elliptical Cylindrical Antenna Array 1 2621009 ECAA Ethylenediamine-Modified Calcium Alginate Aerogel 1 2621012 ECAA Eur Con Action on Anticoag 1 2621017 ECAA extracorporeal assisted anastomosis 1 2621013 ECAA Extracranial internal Carotid Artery Aneurysm 1