Measurement of vitamin D levels in inflammatory bowel disease patients reveals a subset of Crohn's disease patients with elevated 1,25-dihydroxyvitamin D and low bone mineral density

M. T. Abreu, Y. Kantorovich, E. A. Vasiliauskas, U. Gruntmanis, R. Matuk, K. Daigle, S. Chen, D. Zehnder, Y. C. Lin, H. Yang, M. Hewison, J. S. Adams