RT Journal Article SR Electronic T1 Postpartum thunderclap headache JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1033 OP 1035 DO 10.1503/cmaj.080344 VO 179 IS 10 A1 Pranshu Sharma MD A1 Alexandre Y. Poppe MD A1 Muneer Eesa MD A1 Nikolai Steffenhagen MD A1 Mayank Goyal MD YR 2008 UL http://www.cmaj.ca/content/179/10/1033.abstract