Association of brain-derived neurotrophic factor (BDNF) Val66Met polymorphism with early-onset bipolar disorder

Malik Nassan, Paul E. Croarkin, Joan L. Luby, Marin Veldic, Paramjit T. Joshi, Susan L. Mcelroy, Robert M. Post, John T. Walkup, Kelly Cercy, Jennifer R. Geske, Karen D. Wagner, Alfredo B. Cuellar-Barboza, Leah Casuto, Catharina Lavebratt, Martin Schalling, Peter S. Jensen, Joanna M. Biernacka, Mark A. Frye^*