Letter to the editor: Trends in mitral valve surgery for mitral valve regurgitation in Denmark: Changes in patient characteristics and mortality from 1996 to 2022
- 1Qingdao Medical College, Qingdao University, Qingdao 266000, Shandong Province, China; Department of Gynecology, The Affiliated Hospital of Qingdao University, Qingdao 266000, Shandong Province, China.
- 0Qingdao Medical College, Qingdao University, Qingdao 266000, Shandong Province, China; Department of Gynecology, The Affiliated Hospital of Qingdao University, Qingdao 266000, Shandong Province, China.
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