[1] UCL, Dept Clin Res Educ & Hlth Psychol, Ctr Outcomes Res & Effectiveness, London, England
[2] Royal Coll Obstetricians & Gynaecologists, Natl Guideline Alliance, London, England
[3] Sussex Partnership NHS Fdn Trust, Hove, England
[4] Univ Sussex, Sch Psychol, Brighton, E Sussex, England
[5] Lancashire & South Cumbria NHS Fdn Trust, Preston, Lancs, England
[6] Univ Liverpool, Liverpool, Merseyside, England
[7] Davenal House Surg, Bromsgrove, England
[8] Univ Bristol, Bristol Med Sch, Populat Hlth Sci, Bristol, Avon, England
[9] Helen Bamber Fdn, London, England
[10] UCL, Div Psychiat, London, England
[11] Springfield Hosp, Traumat Stress Serv, London, England
[12] Kings Coll London, Kings Ctr Mil Hlth Res, London, England
[13] St Pancras Hosp, Camden & Islington NHS Fdn Trust, London, England