Impact of Chronic DDD Pacing on Time-Domain Indexes of Heart Rate Variability in Patients with Hypertrophic Obstructive Cardiomyopathy. - Simantirakis, E. N.; Kochiadakis, G. E.; Kanakaraki, M. K.; Marketou, M. E.; Parthenakis, F. I.; Kanoupakis, E. M.; Vardas, P. E. (Pacing & Clinical Electrophysiology, 1999)