No abstract available
Keywords:
3; 4.
MeSH terms
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Annual Reports as Topic
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Congresses as Topic / history*
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Congresses as Topic / organization & administration
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Group Processes
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History, 20th Century
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Humans
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Societies, Medical / history*
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Societies, Medical / organization & administration
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Thoracic Surgery / history*
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Thoracic Surgery / organization & administration
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United States