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This study was to identify risk factors for bovine spongiform encephalopathy (BSE) by means of individual case-control data. 43 BSE cases in a defined region in Lower Saxony and Schleswig-Holstein were compared with 84 control animals. Purchase of new breeding stock and cross contamination between feed on the farm did not seem to have influence on the BSE(More)
Hospitals are complex enterprises with, at the time being, evolving organizational structures. In the 80s innovative system concepts for the computer support of such complex organizations were developed, based on a controlled distribution of the components of multi-functional information systems (IS). More recently several R&D initiatives promoted these(More)
The Ministry of Health and Environmental Control of Berlin is developing a Health Information System (HIS) on the basis of a multi-satellite network system, comprising a central, regional, local and functional unit level. The main part of this paper describes the conceptual structure of the Common Data Base (CDB) of HIS with special regard to the(More)
The needs for permanently changing the logical and physical structure of a medical datebase during the development of a health information system have initiated the project of implementing a DATA MANAGER. The concept of the DATA MANAGER covers facilities for the development of the logical data structure model including documentation of the model and(More)