1. Measuring the impact of patient portals: what the literature tells us Publication: Oakland, Calif. : California HealthCare Foundation, [2011] Subject(s): Community ParticipationDelivery of Health Care -- methodsElectronic Health RecordsPatient-Centered CareCommunity Health ServicesConsumer BehaviorDiffusion of InnovationHealth Services AccessibilityOutcome and Process Assessment (Health Care)Quality of Health CareHumansCaliforniaUnited States