Risk of rupture of small anterior communicating artery aneurysms is similar to posterior circulation aneurysms. by Bijlenga, P, Ebeling, C, Jaegersberg, M, Summers, P, Rogers, A, Waterworth, A, Iavindrasana, J, Macho, J, Pereira, V, Bukovics, P, Vivas, E, Sturkenboom, M, Wright, J, Friedrich, C, Frangi, A, Byrne, J, Schaller, K, Rufenacht, D