Sequential Activation of Ground Pads Reduces Skin Heating During Radiofrequency Tumor Ablation: In Vivo Porcine Results. - David J. Schutt; M. Michael Swindle; Kristi L. Helke; Gorka Bastarrika; Florian Schwarz; Dieter Haemmerich (IEEE Trans. Biomed. Eng., 2010)