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| 1950 |
| | The Medical Research Council in Britain produces a report, by Austin Hill and Richard Doll, linking smoking and lung cancer | |
| | Tobacco and the doctor's opinion Wellcome Library, London
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| 1953 |
| | US microbiologist Jonas Salk announces the discovery of an effective vaccine against polio | |
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| 1960 |
| | The birth control pill wins FDA approval in the US and goes on sale | |
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| c. 1961 |
| | The drug Thalidomide, synthesized in West Germany, is shown to have been the cause of severe defects in about 12,000 children born in 46 countries | |
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| 1962 |
| | Fidel Castro releases, for $53 million in food and medicine, the Cuban exiles taken prisoner in the Bay of Pigs fiasco | |
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| 1962 |
| | British surgeon John Charnley pioneers the technique of joint replacement, giving a patient a new hip in a small hospital in Wrightington | |
| | Total knee replacement Wellcome Library, London
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| 1964 |
| | Surgeons Michael Bakey in the USA and Vasilii Kolesov in the USSR pioneer coronary bypass surgery, using the patient's mammary artery | |
| | Coronary artery bypass graft Wellcome Photo Library
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| 1967 |
| | South African surgeon Christiaan Barnard, in Cape Town, transplants the heart of a young woman into a 55-year-old grocer, Louis Washkansky | |
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| 1969 |
| | British scientists Patrick Steptoe and Robert Edwards fertilize in a test-tube eggs removed from human ovaries | |
| | Human sperm fertilising an egg Wellcome Photo Library
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| 1972 |
| | The Tuskegee syphilis experiment in Alabama becomes a major scandal after a whistle-blower reveals the details | |
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