[IEEE 2008 5th International Summer School and Symposium on Medical Devices and Biosensors - Hong Kong, China (2008.06.1-2008.06.3)] 2008 5th International Summer School and Symposium on Medical Devices and Biosensors - TakeCare: A home-based sensor system for the management of cardiovascular risk factors Primary prevention by monitoring vital body signs, analysing the data and closing the loop by feedback, coaching, and motivation