1. Department of PharmacologyUniversity of California Davis CA 95616 USA
2. Institute for Experimental Cardiovascular MedicineUniversity Heart Centre, and Faculty of MedicineUniversity of Freiburg D‐79110 Germany
3. Department of PharmacologyColumbia University NY 10032 USA
4. Department of Clinical PhysiologyHealth ScienceTohoku University Graduate School of Medicine Sendai 980–8574 Japan
5. Department of PhysiologyUniversity of Debrecen Debrecen Hungary
6. Department of Internal MedicineCardiovascular MedicineUniversity of California Davis USA
7. Department of Department of MedicineJohns Hopkins University Baltimore MD 21205 USA
8. Department of Biomedical EngineeringUniversity of California Davis CA 95616 USA