RT Article T1 Age, period and cohort effects in frequent cannabis use among US students: 1991-2018 JF Addiction VO 114 IS 10 SP 1763 OP 1772 A1 Hamilton, Ava D. A2 Keyes, Katherine M. A2 Schulenberg, John E. -2023 A2 Patrick, Megan E. A2 Jang, Joy Bohyun LA English YR 2019 UL https://krimdok.uni-tuebingen.de/Record/1912453193 DO 10.1111/add.14665