PT - JOURNAL ARTICLE ED - , TI - Correction: Screening for a new primary cancer in patients with existing metastatic cancer: a retrospective cohort study AID - 10.9778/cmajo.20180186 DP - 2018 Oct 01 TA - CMAJ Open PG - E567--E567 VI - 6 IP - 4 4099 - http://www.cmajopen.ca/content/6/4/E567.short 4100 - http://www.cmajopen.ca/content/6/4/E567.full SO - CMAJ2018 Oct 01; 6