Long-chain metabolites of α-tocopherol emerge from the shadow of their precursors: Α-13'-OH and Α-13'-COOH as a new class of regulatory metabolites. (September 2016) - Schmölz, L.; Wallert, M.; Ciffolilli, S.; Kluge, S.; Cruciani, G.; Glei, M.; Werz, O.; Galli, F.; Birringer, M.; Lorkowski, S.