Serum BDNF levels correlate with regional cortical thickness in minor depression: a pilot study - Polyakova, M; Beyer, F; Mueller, K; Sander, C; Witte, V; Lampe, L; Rodrigues, F; Riedel-Heller, S; Kratzsch, J; Hoffmann, K T; Villringer, A; Schoenknecht, P; Schroeter, M L (Sci Rep, 2020)