1. St Bartholomew’s Hospital , West Smithfield, London, EC1A 7BE , UK
2. Hospital Santa Cruz , Lisboa, Portugal
3. Hospital Vila Franca de Xira , Lisboa, Portugal
4. Institute of Cardiovascular Science, UCL , 62 Huntley Street, London, WC1E 6DD , UK
5. William Harvey Institute, Queen Mary University of London , Charterhouse Square, London, EC1M 6BQ , UK