A study is being carried out to help women who have given birth by caesarean decide how to give birth the next time.
The DiAMOND study - Decision Aids for Mode of Next Delivery - will question 600 pregnant mothers in Bristol, Somerset and Dundee.
Researchers have developed two different methods of giving women information on the risks and benefits of natural and repeat caesarean.
They will be compared to women who are given standard information.
The joint Bristol and Dundee University study will measure if the new methods either prompt women to take a second caesarean or opt for natural birth.
Dr Alan Montgomery from Bristol University said: "We are keen for as many women as possible, who are eligible for the study, to take part.
"We have midwives in place at St Michael's and Southmead (in Bristol) to help with recruitment."
The study, which will also take place in Dundee and Weston-super-Mare, is due to continue until the end of 2006.