RT Journal Article SR Electronic T1 Initial choice of medication has little effect on short-term or long-term outcome for most patients with Parkinson's disease JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 17 OP 17 DO 10.1136/ebmed-2014-110115 VO 20 IS 1 A1 Robert A Hauser YR 2015 UL http://ebm.bmj.com/content/20/1/17.abstract AB