<style face="normal" font="default" size="100%">Validating the accuracy of an activity monitor in a visually impaired older population</style>

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0<style face="normal" font="default" size="100%">Validating the accuracy of an activity monitor in a visually impaired older population</style><style face="normal" font="default" size="100%">Validating the accuracy of an activity monitor in a visually impaired older population</style>