RT Journal Article SR Electronic T1 Elderly woman with headache JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 466 OP 479 DO 10.1136/emermed-2019-209201 VO 37 IS 8 A1 Kuo-Chang Lee A1 Wei-Jing Lee YR 2020 UL http://emj.bmj.com/content/37/8/466.abstract AB