German study tracks chronic diseaseTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoUdo Bauer07/01/2013July 1, 2013A long-term German study of common chronic disease - known as the National Cohort study - tracks 200,000 patients over 30 years. It aims to shed some light on the development - and possible prevention - of these endemic conditions.https://p.dw.com/p/18zwJAdvertisement