RONNE-ENGSTRÖM E., BOROTA L., KOTHIMBAKAM R., MARKLUND N., LEWÉN A., and ENBLAD P. “Outcome from Spontaneous Subarachnoid haemorrhage—results from 2007–2011 and Comparison With Our Previous Series”. Upsala Journal of Medical Sciences, vol. 119, no. 1, Oct. 2013, pp. 38–43, doi:10.3109/03009734.2013.849781.