Recurrent Perimesencephalic Nonaneurysmal Subarachoid Hemmorrhage Within a Short Period of Time:A Case ReportWorld J Clin Cases 16:3356-3364, Li,J.,et al, 2021
Subarachnoid HemorrhageNEJM 377:257-266, Lawton, M.T. & Vates, G.E., 2017