1. Department of Animal Science, Michigan State University, East Lansing, Michigan.
2. Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine, School of Medicine, Yale University, New Haven, Connecticut.
3. Department of Physiology, Michigan State University, East Lansing, Michigan.
4. LARCEL, Laboratorio Andaluz de Reprogramación Celular, BIONAND, Andalucía, Spain.