Effects of Stimulus Intensity and Electrode Placement on the Efficacy and Cognitive Effects of Electroconvulsive Therapy - Sackeim, HA; Prudic, J; Devanand, DP; Kiersky, JE; Fitzsimons, L; Moody, BJ; McElhiney, MC; Coleman, EA; Settembrino, JM (N Engl J Med, 1993)