[1] Warwick Med Sch, Div Hlth Sci, Soc & Eth, Gibbet Hill Campus, Coventry CV4 7AL, W Midlands, England
[2] Warwick Med Sch, Div Hlth Sci, Acute Med, Gibbet Hill Campus, Coventry CV4 7AL, W Midlands, England
[3] Warwick Med Sch, Div Hlth Sci, Clin Eth, Gibbet Hill Campus, Coventry CV4 7AL, W Midlands, England
[4] Warwick Med Sch, Div Hlth Sci, Crit Care Med, Gibbet Hill Campus, Coventry CV4 7AL, W Midlands, England
[5] Cambridge Univ Hosp, Soc & Eth, Cambridge, England
[6] Cambridge Univ Hosp, Acute Med, Cambridge, England
[7] Univ Warwick, Heart England NHS Fdn Trust, Crit Care Med, Coventry, W Midlands, England