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Wald N, Hackshaw A.Wald N, et al.Lancet. 1997 Aug 30;350(9078):665. doi: 10.1016/S0140-6736(05)63358-2.Lancet. 1997.PMID: 9288070No abstract available.
Wald N, Hackshaw A.Wald N, et al.BMJ. 1993 May 1;306(6886):1198-9. doi: 10.1136/bmj.306.6886.1198-c.BMJ. 1993.PMID: 8499838Free PMC article.No abstract available.
Wald N, Chamberlain J, Hackshaw A.Wald N, et al.Tumori. 1993 Dec 31;79(6):371-9. doi: 10.1177/030089169307900601.Tumori. 1993.PMID: 8171734Review.No abstract available.
Hackshaw A, Law M, Wald N.Hackshaw A, et al. Among authors: wald n.BMJ. 2000 Nov 11;321(7270):1221-2; author reply 1222-3.BMJ. 2000.PMID: 11073522No abstract available.