[1] Liverpool John Moores Univ, Fac Hlth, Sch Nursing & Allied Hlth, Tithebarn Bldg, Liverpool L2 2ER, Merseyside, England
[2] Queen Mary Univ London, Barts Hlth NHS Trust, St Bartholomews Hosp, London, England
[3] Queen Mary Univ London, William Harvey Res Inst, Tithebarn Bldg, London L2 2ER, England
[4] Oxford Univ Hosp NHS Fdn Trust, Oxford Biomed Res Ctr, Oxford, England
[5] Liverpool Heart & Chest Hosp, Liverpool, Merseyside, England
[6] Liverpool Ctr Cardiovasc Sci, Liverpool, Merseyside, England