Bitarafan S, Saboor-Yaraghi A, Sahraian M-A, Soltani D, Nafissi S, Togha M, Beladi Moghadam N, Roostaei T, Mohammadzadeh Honarvar N, Harirchian M-H. Effect of Vitamin A Supplementation on Fatigue and Depression in Multiple Sclerosis Patients: A Double-blind Placebo-controlled Clinical Trial. Iran J Allergy Asthma Immunol. 2016;15(1):13-19.