Severe complications associated with epidural and spinal anaesthesias in Finland 1987-1993. A study based on patient insurance claims [see comment] - Aromaa, U; Lahdensuu, M; Cozanitis, D A (Acta Anaesthesiol Scand, 1997)
. Doi: 10.1111/j.1399-6576.1997.tb04722.x