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Hopkins A, Cattell WR.Hopkins A, et al.Lancet. 1980 May 31;1(8179):1194. doi: 10.1016/s0140-6736(80)91654-2.Lancet. 1980.PMID: 6104014No abstract available.
Maddison PJ, Baker LR, Cattell WR, Hopkins AP.Maddison PJ, et al. Among authors: hopkins ap.Br Med J. 1973 May 5;2(5861):281-2. doi: 10.1136/bmj.2.5861.281.Br Med J. 1973.PMID: 4704497Free PMC article.No abstract available.