Blood α-Tocopherol, γ-Tocopherol Levels and Risk of Prostate Cancer: A Meta-Analysis of Prospective Studies Cui, Ran ; Liu, Zhu-Qing ; Xu, Qing Abstract Publication: PLoS ONE Pub Date: March 2014 DOI: 10.1371/journal.pone.0093044 Bibcode: 2014PLoSO...993044C