A Study to Evaluate Satisfaction of the Personal Health Record Platform for Chronic Patients in Emergency Department

The investigators developed the service showing patient health record altogether which is managed by each hospital separately and recording the patient health information based on mobile application. This study is a multi-centered study involving two hospitals, providing services to patients, care givers and medical staffs. After the participants use this service, the investigators evaluate the effectiveness and satisfaction of this service through questionnaires and in-depth interviews.