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Wardle EN, Menon IS, Rastogi SP.Wardle EN, et al.Br Med J. 1970 May 2;2(5704):260-3. doi: 10.1136/bmj.2.5704.260.Br Med J. 1970.PMID: 4246192Free PMC article.
Wardle EN.Wardle EN.Br Med J. 1974 May 4;2(5913):273. doi: 10.1136/bmj.2.5913.273-a.Br Med J. 1974.PMID: 4827082Free PMC article.No abstract available.
Farr M, Wardle EN, Wilkinson K.Farr M, et al. Among authors: wardle en.Br Med J. 1976 Mar 13;1(6010):624-5. doi: 10.1136/bmj.1.6010.624.Br Med J. 1976.PMID: 1252852Free PMC article.
Wardle EN.Wardle EN.Br Med J. 1972 Nov 18;4(5837):427-8. doi: 10.1136/bmj.4.5837.427-e.Br Med J. 1972.PMID: 4637171Free PMC article.No abstract available.