Liquid embolic agents for endovascular embolization: evaluation of an established (Onyx) and a novel (PHIL) embolic agent in an in vitro AVM model - Vollherbst, D F; Sommer, C M; Ulfert, C; Pfaff, J; Bendszus, M; Möhlenbruch, M A (AJNR Am J Neuroradiol, 2017)