RT Article T1 A sequential mixed-mode experiment in the U.S. national Monitoring the Future Study JF Journal of survey statistics and methodology VO 6 IS 1 SP 72 OP 97 A1 Patrick, Megan E. A2 Miech, Richard A. A2 Johnston, Lloyd D. A2 O'Malley, Patrick M. A2 Schulenberg, John E. -2023 A2 Laetz, Virginia B. A2 Couper, Mick 1957- LA English YR 2018 UL https://krimdok.uni-tuebingen.de/Record/1912699842 DO 10.1093/jssam/smx011