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Lucas A, Ewing G, Roberts SB, Coward WA.Lucas A, et al. Among authors: ewing g.Arch Dis Child. 1987 Aug;62(8):796-800. doi: 10.1136/adc.62.8.796.Arch Dis Child. 1987.PMID: 3310916Free PMC article.
Prentice A, Ewing G, Roberts SB, Lucas A, MacCarthy A, Jarjou LM, Whitehead RG.Prentice A, et al. Among authors: ewing g.Acta Paediatr Scand. 1987 Jul;76(4):592-8. doi: 10.1111/j.1651-2227.1987.tb10526.x.Acta Paediatr Scand. 1987.PMID: 3630676
Lucas A, Ewing G, Roberts SB, Coward WA.Lucas A, et al. Among authors: ewing g.Br Med J (Clin Res Ed). 1987 Jul 11;295(6590):75-7. doi: 10.1136/bmj.295.6590.75.Br Med J (Clin Res Ed). 1987.PMID: 3113642Free PMC article.