Alterations of Cortical Electrical Activity in Patients with Sacral Neuromodulator. - Braun,P.M.; Bäzner,H.; Seif,C.; Böhler,G.; Bross,S.; Eschenfelder,C.C.; Alken,P.; Hennerici,M.; Jünemann,P. (Eur Urol, 2002)