Kan P, Srinivasan VM, Mbabuike N, Tawk RG, Ban VS, Welch BG, Mokin M, Mitchell BD, Puri A, Binning MJ, Duckworth E. Aneurysms with persistent patency after treatment with the Pipeline Embolization Device. J Neurosurg. 2017 Jun; 126(6):1894-1898.