http://www.who.int/docstore/bulletin/pdf/2000/issue11/bu0229.pdf

How to approach the utilization of clinical and management health information is still a complex, chaotic, and controversial issue. It is not surprising that many expectations regarding the contribution of health information systems to clinical practice have not been fulfilled. The use of patient medical records and encounter data as sources of evidence requires the redesign of clinical records, methods to capture and organize data, computerization of records, and methods for data searching and interpretation.