[On the 50th anniversary of the introduction into clinical practice of flexible endoscopy. Steps and prospects of development of endoscopy of gastrointestinal tract].
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PL
Shcherbakov
D000846:Anniversaries and Special Events; D004724:Endoscopy / Q000266:history* / Q000295:instrumentation* / Q000379:methods* / Q000639:trends*; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D011173:Portraits as Topic