PT - JOURNAL ARTICLE AU - Jeffrey Zeleznik TI - Re: Identifying Problematic Substance Use in a National Sample of Adolescents Using Frequency Questions AID - 10.3122/jabfm.2020.01.190300 DP - 2020 Jan 01 TA - The Journal of the American Board of Family Medicine PG - 152--152 VI - 33 IP - 1 4099 - http://www.jabfm.org/content/33/1/152.1.short 4100 - http://www.jabfm.org/content/33/1/152.1.full SO - J Am Board Fam Med2020 Jan 01; 33