1. Department of Vascular Medicine and Pharmacology, Istituto di Ricerche Farmacologiche ‘Mario Negri’, Consorzio Mario Negri Sud, 66030 Santa Maria Imbaro (Chieti), Italy
2. Department of Molecular Pharmacology and Pathology, Istituto di Ricerche Farmacologiche ‘Mario Negri’, Consorzio Mario Negri Sud, 66030 Santa Maria Imbaro (Chieti), Italy
3. University Laboratory of Physiology, Parks Road, Oxford OX1 3PT, UK