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- [44] CASE-CONTROL STUDY AND RETROSPECTIVE CONTROLS [J]. BMJ-BRITISH MEDICAL JOURNAL, 1979, 2 (6203): : 1507 - 1507
- [45] CASE-CONTROL STUDY AND RETROSPECTIVE CONTROLS [J]. BRITISH MEDICAL JOURNAL, 1979, 2 (6203): : 1507 - 1508
- [47] Case-control study of oestrogen replacement therapy and risk of cervical cancer [J]. BRITISH MEDICAL JOURNAL, 1997, 315 (7100): : 85 - 88