Three pieces of research by Celia Kitzinger (University of York) and Jenny Kitzinger (Cardiff University) have been cited in the Houses of Parliament Parliamentary Office of Science and Technology POSTnote on "Vegetative and Minimally Conscious States" - see references 72, 73 and 90 on the attached POSTnote.
POST is an office of both Houses of Parliament, charged with providing independent and balanced analysis of policy issues that have a basis in science and technology. Most parliamentarians do not have a scientific or technological background but science and technology issues are increasingly integral to public policy. Parliamentarians are bombarded daily with lobbying, public enquiries and media stories about science and technology. POST's aim is to help parliamentarians examine such issues effectively.
You can see the full directory of POSTnotes here. http://www.parliament.uk/mps-
lords-and-offices/offices/ bicameral/post/publications/ postnotes/