2 School of Allied and Community Health, Institute of Health and Social Care, London Southbank University, 103 Borough Road, SE1 0AA, UK.
3 Wexham Park Hospital, Frimley Health NHS Foundation Trust, UK. Electronic address: azwa.masahuling@nhs.net.
4 Newham University Hospital, Barts Health NHS Trust, London E13 8SL, UK; Barts Heart Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London EC1A 7BE, UK; NIHR Barts Biomedical Research Centre, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK. Electronic address: m.khanji@qmul.ac.uk.