共查询到20条相似文献，搜索用时 0 毫秒
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R M Walters 《BMJ (Clinical research ed.)》1980,280(6216):793
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C Dyer 《BMJ (Clinical research ed.)》1987,295(6592):257-258
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A E McCandless 《BMJ (Clinical research ed.)》1972,1(5795):308-309
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C Dyer 《BMJ (Clinical research ed.)》1987,294(6575):825
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L B Cooke 《BMJ (Clinical research ed.)》1990,300(6718):193-195
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Alison Davis 《BMJ (Clinical research ed.)》1989,298(6666):113-114
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《BMJ (Clinical research ed.)》1977,2(6088):652-653
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《BMJ (Clinical research ed.)》1975,3(5982):503-504
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D Chakraborti 《BMJ (Clinical research ed.)》1985,291(6506):1426-1427
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V Shennan 《BMJ (Clinical research ed.)》1981,282(6276):1608-1610