The Dutch Endovascular Alliance (DEALL) is a cooperative venture of Interventional Radiologists (IR) and Vascular Surgeons (VS) in some of the largest and most experienced endovascular centres in the Netherlands. The aim of DEALL is to perform independent, prospective and randomized research in the endovascular field. The large patient volume in the participating centres and the extensive experience the founding members have in performing scientific research will ensure both thorough and expeditious execution of the trials performed.