RT Journal Article SR Electronic T1 Diagnosis and acute management of migraine JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E153 OP E158 DO 10.1503/cmaj.211969 VO 195 IS 4 A1 Velina Tzankova A1 Werner J. Becker A1 Tommy L.H. Chan YR 2023 UL http://www.cmaj.ca/content/195/4/E153.abstract