TY - RPRT TI - Investigating causal pathways between liability to ADHD and substance use, and liability to substance use and ADHD risk, using Mendelian randomization. AU - Treur, J. AU - Demontis, D. AU - Sallis, H. AU - ADHD working group of the Psychiatric Genomics Consortium, AU - Richardson, T. AU - Wiers, R. AU - Borglum, A. AU - Verweij, K. AU - Munafo, M. PY - 2019 DO - 10.1101/524769 UR - https://www.biorxiv.org/content/10.1101/524769v1 ID - 10.1101/524769 ER -