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Valsalva maneuver in echocardiography |
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| Authors: | Sami Nimer Ghazal |
| Affiliation: | 1.Cardiology Division, Internal Medicine Department, King Fahd Hospital of the University,University of Dammam,Al-Khobar,Saudi Arabia |
| Abstract: | |
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| 本文献已被 SpringerLink 等数据库收录！ | |