Association between hippocampal structure and serum Brain-Derived Neurotrophic Factor (BDNF) in healthy adults: A registered report oleh L.M.C. Puhlmann, R. Linz, S.L. Valk, P. Vrticka, R. Vos de Wael, A. Bernasconi, N. Bernasconi, B. Caldairou, I. Papassotiriou, G.P. Chrousos, B.C. Bernhardt, T. Singer, V. Engert