1. British Thoracic Association. Deaths from asthma in two regions of England;BMJ,1982
2. Asthma deaths in Cardiff 1963–74: 90 deaths outside hospital;MacDonald, J.B.; Seaton, A.; Williams, D.A.;BMJ,1976
3. Identification of the high-risk asthmatic patient. Experience with 39 patients undergoing ventilation for status asthmatics;Westerman, D.E.; Benatar, SR, Potgieter; PD, Ferguson; A.D.;Am J Med,1979
4. Asthma mortality in Birmingham 1975–7: 53 deaths;Ormerod, L.P.; Stableforth, D.E.;BMJ,1980
5. Asthma mortality in New Zealand: a two year national study;Sears, M.R.; Rea, H.H.; Beaglehole, R.;NZ Med J,1985