It has become obvious in recent years that successfully introducing major new systems into complex medical organizations requires an effective blend of good technical and organizational skills. The technically best system may be woefully inadequate if its implementation is resisted by people who have low psychological ownership in that system. On the other hand, people with high ownership can make a technically mediocre system function fairly well. ORGANIZATIONAL ASPECTS OF HEALTH INFORMATICS focuses on both the successful strategies for implementation of information systems with medical organizations and also on effective management strategies for the altered organization once the new systems are in place.