PT - JOURNAL ARTICLE AU - Keita Sakurai AU - Satoru Morimoto AU - Masashi Kameyama AU - Mitsuhito Mase TI - Dinosaur tail sign on spinal MRI in a patient with postdural puncture headache AID - 10.1136/bcr-2017-221447 DP - 2017 Aug 02 TA - BMJ Case Reports PG - bcr-2017-221447 VI - 2017 4099 - http://casereports.bmj.com/content/2017/bcr-2017-221447.short 4100 - http://casereports.bmj.com/content/2017/bcr-2017-221447.full