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Collins E, Turner G.Collins E, et al.Lancet. 1976 Oct 9;2(7989):797-8. doi: 10.1016/s0140-6736(76)90625-5.Lancet. 1976.PMID: 61462No abstract available.
Collins E, Turner G.Collins E, et al.Lancet. 1973 Dec 29;2(7844):1494. doi: 10.1016/s0140-6736(73)92756-6.Lancet. 1973.PMID: 4129333No abstract available.