R. Ramadan, V. Vaccarino, F. Esteves, D. S. Sheps, J. D. Bremner, P. Raggi, and A. A. Quyyumi, «Association of Vitamin D Status with Mental Stress-induced Myocardial Ischemia in Patients with Coronary Artery Disease». Psychosomatic Medicine 76, no. 7 (Sept. 2014): 569–575.
