[1] Queen Mary Univ London, Womens Hlth Res Unit, London, England
[2] Kings Coll London, Fac Life Sci & Med, London, England
[3] Cambridge Univ Hosp NHS Fdn Trust, Cambridge, England
[4] Whipps Cross Univ Hosp, Barts Hlth NHS Trust, London, England
[5] Brighton & Sussex Univ Hosp NHS Trust, Princess Royal Hosp, Brighton, E Sussex, England
[6] Queen Mary Univ London, Barts & London Sch Med & Dent, London, England
[7] Harvard Med Sch, Div Trauma Emergency Surg & Surg Crit Care, Dept Surg, Boston, MD USA
[8] Imperial Coll London, Dept Surg, London, England
[9] Expt Educ & Res Ctr ELPEN, Athens, Greece
[10] European Univ Cyprus, Sch Med, Nicosia, Cyprus