Delivery assist catheters: a new device class and initial experience in mechanical thrombectomy in acute ischemic stroke patient - Pfaff, Johannes; Siekmann, Ralf; Shah, Yogesh P.; Ringleb, Peter A.; Ulfert, Christian; Kollert, Kai; Bendszus, Martin; Möhlenbruch, Markus Alfred (Clinical neuroradiology, 2018)