Investigators and centres

R Porter (consultant obstetrician and gynaecologist), F Jones (research midwife), and A Cook (research midwife), Royal United Hospital, Bath, recruited 409 women. S Vyas (consultant obstetrician and gynaecologist), J Trinder (specialist registrar in obstetrics and gynaecology), J Spencer (research midwife), and K Lloyd (research midwife), Southmead Hospital, Bristol, recruited 346 women. R Anderson (consultant obstetrician and gynaecologist), A Thein (consultant obstetrician), D Cowley (research nurse), and J Sutton (research midwife), St Michael�s Hospital, Bristol, recruited 210 women. M Read (consultant obstetrician and gynaecologist), R Fricker (research nurse), and M Wheelan (research nurse), Gloucester Royal Hospital, Gloucester, recruited 176 women. A Faulkner (consultant obstetrician and gynaecologist) and Pat Fitzgerald (research midwife), Derriford Hospital, Plymouth, recruited 37 women. J Pogmore (consultant obstetrician and gynaecologist) and J Jongman (research nurse), Birmingham Women�s Hospital, Birmingham, recruited 15 women. N Saunders (consultant obstetrician and gynaecologist), Princess Anne Hospital, Southampton, recruited 5 women. (Two women were withdrawn.)