@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}
}