RT Journal Article SR Electronic T1 Two sisters with myoclonus and ataxia JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 249 OP 252 DO 10.1136/practneurol-2019-002446 VO 20 IS 3 A1 Miguel Pereira A1 João Durães A1 Maria do Carmo Macário YR 2020 UL http://pn.bmj.com/content/20/3/249.abstract AB