More pregnant women in Cambridgeshire are being asked to help in the training of future doctors.
The school of clinical medicine at the University of Cambridge want 150 volunteers who are due to give birth between November and March 2013.
Volunteers will share their experience of pregnancy and tell trainee doctors about changes they are experiencing.
The course, for students before they go into real clinical situations, is designed to give practical experience.
About 1,000 women have already taken part in the scheme which began in 2005.