School of Cardiovascular Medicine & Sciences, King's College London, 3.11 Franklin-Wilkins Building, Waterloo Campus, Stamford Street, London SE1 9NH, UK; Guy's and St Thomas NHS Foundation Trust, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK. Electronic address: Antonella.Corcillo@kcl.ac.uk. Guy's and St Thomas NHS Foundation Trust, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK. School of Cardiovascular Medicine & Sciences, King's College London, 3.11 Franklin-Wilkins Building, Waterloo Campus, Stamford Street, London SE1 9NH, UK; Guy's and St Thomas NHS Foundation Trust, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK. Electronic address: j.karalliedde@kcl.ac.uk.