RT Article T1 Flavors of e-cigarettes used by youths in the United States JF The journal of the American Medical Association VO 322 IS 21 SP 2132 OP 2134 A1 Leventhal, Adam M. A2 Patrick, Megan E. A2 O'Malley, Patrick M. A2 Johnston, Lloyd D. A2 Barrington-Trimis, Jessica A2 Miech, Richard LA English YR 2019 UL https://krimdok.uni-tuebingen.de/Record/1912560798 DO 10.1001/jama.2019.17968