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INTRODUCTION Migraine is a very common disease. For the first time in Belgium, a study has been set up to assess some characteristics of the migraine problem like occurrence, frequency, duration, in a convenience sample of employees. METHODS AND STUDY POPULATION A total of 1660 persons participated in the study. Employees completed a short international(More)
BACKGROUND Occupational health and safety (OHS) services collect a wide range of data during health surveillance. AIMS To build a 'data warehouse' to make OHS data available for research and to investigate sector-specific health problems. METHODS Medical data were extracted, transformed and loaded into the data warehouse. After validation, data on(More)
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