TY - JOUR T1 - Testing the association between tobacco and cannabis use and cognitive functioning: Findings from an observational and Mendelian randomization study PY - -0001/11/30 AU - Mahedy L AU - Wootton R AU - Suddell S AU - Skirrow C AU - Field M AU - Heron J AU - Hickman M AU - Munafò MR ED - DO - DOI: 10.1101/2020.02.26.20028274 PB - Cold Spring Harbor Laboratory Y2 - 2025/01/13 ER -