[1] Queens Med Res Inst, Ctr Inflammat Res, Edinburgh, Midlothian, Scotland
[2] Univ Edinburgh, Edinburgh Crit Care Res Grp, Edinburgh, Midlothian, Scotland
[3] NHS Lothian, Edinburgh, Midlothian, Scotland
[4] Univ Edinburgh, Edinburgh, Midlothian, Scotland
[5] Univ Edinburgh, Edinburgh Clin Trials Unit, Edinburgh, Midlothian, Scotland
[6] Lothian Univ Hosp Div, Edinburgh, Midlothian, Scotland
[7] Univ Edinburgh, Ctr Populat Hlth Sci, Edinburgh, Midlothian, Scotland
[8] Univ Dundee, Sch Nursing & Midwifery, Dundee, Scotland
[9] NHS Tayside, Dundee, Scotland