RT Journal Article SR Electronic T1 Irreversible chorea as the initial presentation of polycythemia rubra vera in an elderly woman JF Neurosciences Journal JO Neurosciences (Riyadh) FD Prince Sultan Military Medical City SP 61 OP 62 VO 24 IS 1 A1 Bhattacharjee, Shakya YR 2019 UL http://nsj.org.sa/content/24/1/61.abstract AB