Electronic medical records (EMRs), often also referred to as electronic health records (EHRs), are a major source of clinical data (although EMR and EHR have subtle differences). ("EHR (electronic health record) vs. EMR (electronic medical record)," [6]) EMRs are computerized medical information systems that collect, store and display patient information. They are means to create legible and organized recordings and to access clinical information about individual patients. EMRs have been described as an important tool to reduce medical errors and improve information sharing among physicians [1]. Nevertheless, there are many barriers that limit EMR adoption, varying from time, cost, security concerns and vendor trust to absence of computer skills for the physician [1]. To some extent such barriers can be lowered by using a framework for systematic EMR implementation [2]. On the other hand, expectations about using EHRs need to be tempered by practical considerations, recognizing that even those countries with relatively high rates of EHR penetration have achieved only limited successes in using EHR data for population health [7]. To what extent EMRs effectively succeed in improving quality of care and patient safety, remains a matter of debate [12,16].