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McCahon D, Beare AS, Stealey V.McCahon D, et al.Postgrad Med J. 1976 Jun;52(608):389-94. doi: 10.1136/pgmj.52.608.389.Postgrad Med J. 1976.PMID: 959117Free PMC article.
McCahon D, Beare AS, Schild GC, Hall TS.McCahon D, et al.Postgrad Med J. 1973 Mar;49(569):195-9. doi: 10.1136/pgmj.49.569.195.Postgrad Med J. 1973.PMID: 4802647Free PMC article.
Russell SM, McCahon D, Beare AS.Russell SM, et al. Among authors: mccahon d.J Gen Virol. 1975 Apr;27(1):1-10. doi: 10.1099/0022-1317-27-1-1.J Gen Virol. 1975.PMID: 806658