PT - JOURNAL ARTICLE AU - Trevor Hancock TI - Public health in the 21st century AID - 10.1503/cmaj.180588 DP - 2018 May 22 TA - Canadian Medical Association Journal PG - E634--E634 VI - 190 IP - 20 4099 - http://www.cmaj.ca/content/190/20/E634.short 4100 - http://www.cmaj.ca/content/190/20/E634.full SO - CMAJ2018 May 22; 190