1. Is vitamin D deficiency a risk factor for ischemic heart disease in patients with established cardiovascular disease? 10-year follow-up of the Nova Scotia Health Survey Wasson, Lauren; Shimbo, Daichi; Rubin, Mishaela R.; Shaffer, Jonathan A.; Schwartz, Joseph E.; Davidson, Karina W. 2011 Articles Coronary heart disease--Risk factorsCardiovascular system--DiseasesVitamin D deficiencyMedical sciencesEpidemiology