Alterations of cortical electrical activity in patients with sacral neuromodulator - Braun, Peter-Martin; Bäzner, Hansjörg; Seif, Christoph; Boehler, Georg; Bross, Stephan; Eschenfelder, Christoph C.; Alken, Peter; Hennerici, Michael G.; Jünemann, Klaus-Peter (European urology, 2002)