TY - JOUR T1 - Response to: “A comprehensive approach needed to address regional variation” JF - Canadian Medical Association Journal JO - CMAJ SP - E841 LP - E841 DO - 10.1503/cmaj.733086 VL - 189 IS - 24 AU - Jack V. Tu Y1 - 2017/06/19 UR - http://www.cmaj.ca/content/189/24/E841.abstract ER -