Affiliation: | 1. University of Cambridge School of Clinical Medicine, Box 111, Cambridge Biomedical Campus, Hills Road, Cambridge CB2 0SP, UK;2. Medical Library, University of Cambridge School of Clinical Medicine, Box 111, Cambridge Biomedical Campus, Hills Road, Cambridge CB2 0SP, UK;3. School of Medicine, University of Limerick, Limerick V94 T9PX, Eire, Republic of Ireland;4. University of Cambridge Primary Care Unit, East Forvie Building, Cambridge Biomedical Campus, Cambridge CB2 0SR, UK |