1. Staffing in Thoracic Medicine;Citron, K.M.; Lewis, D.R.; Nunn, A.J.;Br Med J,1980
2. Only 16 chest consultants left in Wales;Anonymous;Western Mail,1987
3. International classification of diseases;World Health Organisation,1977
4. Population Censuses and Surveys. Hospital Inpatient Enquiry;Office of,1982
5. Population Censuses and Surveys. Mortality Statistics (area);Office of,1982