94.Grodstein F , Kang JH, Glynn RJ et al. A randomized trial of beta carotene supplementation and cognitive function in men: the Physicians' Health Study II. Arch Intern Med 2007; 167:2184-90.
94.Grodstein F, Kang JH, Glynn RJ et al. A randomized trial of beta carotene supplementation and cognitive function in men: the Physicians' Health Study II. Arch Intern Med 2007; 167:2184-90.
