[1] Kings Coll London, Florence Nightingale Fac Nursing Midwifery & Pall, London, England
[2] London North West Univ Healthcare Trust, Learning & Dev, London, England
[3] Oxford Brookes Univ, Oxford Sch Nursing & Midwifery, Oxford, England
[4] Kings Coll London, Sch Life Course Sci, Fac Life Sci & Med, Dept Women & Childrens Hlth, London, England
[5] Univ Warwick, Warwick Clin Trials Unit, Warwick, England
[6] Univ Hosp Coventry & Warwickshire, Warwick, England