TY - RPRT TI - Testing Causal Bidirectional Influences between Physical Activity and Depression using Mendelian Randomization AU - Choi, K. AU - Chen, C.-Y. AU - Stein, M. AU - Klimentidis, Y. AU - Wang, M.-J. AU - Major Depressive Disorder Working Group of the Psychiatric Genomics Consortium, AU - Koenen, K. AU - Smoller, J. PY - 2018 DO - 10.1101/364232 UR - https://www.biorxiv.org/content/10.1101/364232v1 ID - 10.1101/364232 ER -