TY - JOUR T1 - Why public health is the most challenging specialty of all JF - Canadian Medical Association Journal JO - CMAJ SP - E1301 LP - E1301 DO - 10.1503/cmaj.171133 VL - 189 IS - 41 AU - Trevor Hancock Y1 - 2017/10/16 UR - http://www.cmaj.ca/content/189/41/E1301.abstract N2 - ER -