CC Grand Rounds: Contemporary Clinical Medicine: Great Teachers: The Polio Eradication Effort 1988-2018: Progress, Challenges, and the Critical Role of Research0 seconds of 0 secondsVolume 90% Press shift question mark to access a list of keyboard shortcuts Keyboard Shortcuts Play/PauseSPACE Increase Volume↑ Decrease Volume↓ Seek Forward→ Seek Backward← Captions On/Offc Fullscreen/Exit Fullscreenf Mute/Unmutem Seek %0-9 259 Views
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