Usefulness of a Noninvasive Device to Identify Elevated Left Ventricular Filling Pressure Using Finger Photoplethysmography During a Valsalva Maneuver by Galiatsatos, Panagis, MD, Win, Theingi Tiffany, MD, Monti, Jennifer, MD, MPH, Johnston, Peter V., MD, Herzog, William, MD, Trost, Jeffrey C., MD, Hwang, Chao-Wei, MD, Fridman, Gene Y., PhD, Wang, Nae-Yuh, PhD, Silber, Harry A., MD, PhD

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