Brinjikji W, Rabinstein AA, Lanzino G et al. Patient outcomes are better for unrupured cerebral aneurysms treated at centers that preferentially treat with endovascular coiling: a study of the national inpatient sample 2011 – 2007. AJNR Am J Neuroradiol 2011; 32: 1065 – 1070 (Neuroradiologie Scan, 2012)