RT Journal Article SR Electronic T1 Many challenges of conducting clinical trials in CJD JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 98 OP 98 DO 10.1136/jnnp-2016-314578 VO 88 IS 2 A1 Appleby, Brian S YR 2017 UL http://jnnp.bmj.com/content/88/2/98.abstract AB