PT - JOURNAL ARTICLE AU - Kleinman, Robert A. AU - Merkel, Colin TI - Digital contact tracing for COVID-19 AID - 10.1503/cmaj.200922 DP - 2020 Jun 15 TA - Canadian Medical Association Journal PG - E653--E656 VI - 192 IP - 24 4099 - http://www.cmaj.ca/content/192/24/E653.short 4100 - http://www.cmaj.ca/content/192/24/E653.full SO - CMAJ2020 Jun 15; 192