B Grace (Presenting Author) – Royal Brompton Hospital, London, UK; R Jackson – Royal Brompton Hospital, London, UK; T Rahneva – Royal Brompton Hospital, London, UK; O Williams – Royal Brompton Hospital, London, UK; V Griffiths – Royal Brompton Hospital, London, UK; JGF Cleland – Royal Brompton Hospital, London, UK; SK Prasad – Royal Brompton Hospital, London, UK; BP Halliday – Royal Brompton Hospital, London, UK