Medeiros, T. M. D. de; Ortega, K. C.; Mion Júnior, D.; Nonoyama, K.; Barretto, O. C. de O. Normal Erythrocyte Calpain I Activity on Membrane Proteins under Near-Physiological Conditions in Patients With Essential Hypertension. Sao Paulo Med J 2002, 120, 5-8.