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Russell MA, Merriman R, Stapleton J, Taylor W.Russell MA, et al.Br Med J (Clin Res Ed). 1983 Dec 10;287(6407):1782-5. doi: 10.1136/bmj.287.6407.1782.Br Med J (Clin Res Ed). 1983.PMID: 6416593Free PMC article.Clinical Trial.
Russell MA, Stapleton JA, Jackson PH, Hajek P, Belcher M.Russell MA, et al. Among authors: stapleton ja.Br Med J (Clin Res Ed). 1987 Nov 14;295(6608):1240-4. doi: 10.1136/bmj.295.6608.1240.Br Med J (Clin Res Ed). 1987.PMID: 3120963Free PMC article.