@article{ap2009cost, title = {Cost effective ultrasound imaging training mentor for use in developing countries}, author = {Ap Cenydd, L and John, Nigel W and Vidal, Franck P and Gould, Derek A and Joekes, Elizabeth and Littler, Peter}, journal = {Stud Health Technol Inform}, volume = {142}, pages = {49--54}, year = {2009} }