TY - JOUR T1 - Trump travel ban means academics must strengthen, not sever, US ties JF - Canadian Medical Association Journal JO - CMAJ SP - E420 LP - E421 DO - 10.1503/cmaj.170247 VL - 189 IS - 11 AU - Matthew B. Stanbrook Y1 - 2017/03/20 UR - http://www.cmaj.ca/content/189/11/E420.abstract N2 - ER -