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Goodfellow A, Calvert H, Williams RM.Goodfellow A, et al. Among authors: calvert h.J R Soc Med. 1980 May;73(5):373-5. doi: 10.1177/014107688007300516.J R Soc Med. 1980.PMID: 6787196Free PMC article.No abstract available.
Goodfellow A, Calvert H.Goodfellow A, et al. Among authors: calvert h.Lancet. 1979 Sep 1;2(8140):478-9. doi: 10.1016/s0140-6736(79)91538-1.Lancet. 1979.PMID: 89545No abstract available.
Swart E, Calvert HT.Swart E, et al. Among authors: calvert ht.Proc R Soc Med. 1969 Oct;62(10):1014-6.Proc R Soc Med. 1969.PMID: 5346158Free PMC article.No abstract available.