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Stern H, Hannington G, Booth J, Moncrieff D.Stern H, et al.Br Med J (Clin Res Ed). 1986 Mar 15;292(6522):718-20. doi: 10.1136/bmj.292.6522.718.Br Med J (Clin Res Ed). 1986.PMID: 3006862Free PMC article.