Depression, the Val66Met polymorphism, age, and gender influence the serum BDNF level

Betina Elfving, Henriette Nørmølle Buttenschøn, Leslie Foldager, Pia H P Poulsen, Niels Johan Andersen, Matias Brødsgaard Grynderup, Åse M Hansen, Henrik A. Kolstad, Linda Kaerlev, Sigurd Mikkelsen, Jane F Thomsen, Anders Børglum, Gregers Wegener, Ole Mors