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Mason C, Murdoch JC.Mason C, et al. Among authors: murdoch jc.J R Coll Gen Pract. 1983 Feb;33(247):91-9.J R Coll Gen Pract. 1983.PMID: 6864640Free PMC article.
Hamley JG, Brown SV, Crooks J, Knox JD, Murdoch JC, Patterson AW.Hamley JG, et al. Among authors: murdoch jc.J R Coll Gen Pract. 1981 Nov;31(232):654-60.J R Coll Gen Pract. 1981.PMID: 7328552Free PMC article.
Hamley JG, Brown SV, Crooks J, Christopher LJ, Dingwall D, Murdoch JC, Knox JD, Patterson AW.Hamley JG, et al. Among authors: murdoch jc.J R Coll Gen Pract. 1981 Nov;31(232):648-50.J R Coll Gen Pract. 1981.PMID: 7328551Free PMC article.