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Himsworth RL, Fraser PM.Himsworth RL, et al. Among authors: fraser pm.Br Med J. 1973 Aug 4;3(5874):295. doi: 10.1136/bmj.3.5874.295-c.Br Med J. 1973.PMID: 4723484Free PMC article.No abstract available.
England JM, Fraser PM.England JM, et al. Among authors: fraser pm.Lancet. 1973 Mar 3;1(7801):449-52. doi: 10.1016/s0140-6736(73)91878-3.Lancet. 1973.PMID: 4120365No abstract available.