[1] Univ Oxford, Nuffield Dept Populat Hlth, Natl Perinatal Epidemiol Unit, Oxford OX3 7LF, England
[2] Univ Oxford, John Radcliffe Hosp, Med Sci Div, Oxford, England
[3] Univ Edinburgh, Queens Med Res Inst, MRC Ctr Reprod Hlth, Edinburgh, Midlothian, Scotland
[4] Royal Wolverhampton Hosp NHS Trust, New Cross Hosp, Wolverhampton, England
[5] Univ Oxford, Bodleian Hlth Care Libraries, Oxford, England
[6] Queens Univ Belfast, Sch Nursing & Midwifery, Belfast, Antrim, North Ireland
[7] Cambridge Univ Hosp NHS Fdn Trust, Cambridge, England
[8] Univ Wolverhampton, Wolverhampton, England
[9] Univ Oxford, Nuffield Dept Womens & Reprod Hlth, Oxford, England
[10] Oxford Univ Hosp NHS Fdn Trust, John Radcliffe Hosp, Oxford, England
[11] Diabetes UK, Wells Lawrence House, London, England
[12] Univ East Anglia, Norwich Med Sch, Norwich, Norfolk, England
[13] Kings Coll London, Div Womens Hlth, St Thomas Campus, London, England
[14] Norfolk & Norwich Univ Hosp, Elsie Bertram Diabet Ctr, Norwich, Norfolk, England
[15] Stepping Hill Hosp, Stockport NHS Fdn Trust, Stockport, Lancs, England
[16] JDRF Type 1 Diabet Char, London, England
[17] Western Gen Hosp, Metab Unit, Edinburgh, Midlothian, Scotland
[18] Univ Southampton, Natl Inst Hlth Res Evaluat, Trials & Studies Coordinating Ctr, James Lind Alliance, Southampton, Hants, England