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Plotkin SA, Ingalls TH, Farquhar JD, Katz M.Plotkin SA, et al. Among authors: farquhar jd.Lancet. 1968 Nov 2;2(7575):934-6. doi: 10.1016/s0140-6736(68)91166-5.Lancet. 1968.PMID: 4176261No abstract available.
Plotkin SA, Farquhar JD, Ogra PL.Plotkin SA, et al. Among authors: farquhar jd.JAMA. 1973 Aug 6;225(6):585-90. doi: 10.1001/jama.225.6.585.JAMA. 1973.PMID: 4740523No abstract available.
Plotkin SA, Farquhar JD.Plotkin SA, et al. Among authors: farquhar jd.Postgrad Med J. 1972 Jul;48:Suppl 3:47-54.Postgrad Med J. 1972.PMID: 4569721Review.No abstract available.
Plotkin SA, Farquhar J, Katz M, Prinzie A, Ongalls TH.Plotkin SA, et al. Among authors: farquhar j.Am J Epidemiol. 1968 Jul;88(1):97-102. doi: 10.1093/oxfordjournals.aje.a120871.Am J Epidemiol. 1968.PMID: 5661538No abstract available.