Jutta Dierkes, The University of Bergen (IMAGE) The University of Bergen Caption Jutta Dierkes advices all who have experienced cardiovascular diseases to measure their levels of vitamin D. Credit Photo: University of Bergen. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.