?:authorAffiliation
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[\'Vanderbilt University Medical Center, Nashville, TN 37232, USA.\', \'Department of Physical Medicine & Rehabilitation, Vanderbilt University Medical Center, Nashville, TN, USA.\', \'Division of Geriatric Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA.\', \'Section of Hospital Medicine, Division of General Internal Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA.\']
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