AUTHOR=F. Hernandez Ledia , Redgrave Peter , Obeso Jose TITLE=Habitual behavior and dopamine cell vulnerability in Parkinson disease JOURNAL=Frontiers in Neuroanatomy VOLUME=9 YEAR=2015 URL=https://www.frontiersin.org/journals/neuroanatomy/articles/10.3389/fnana.2015.00099 DOI=10.3389/fnana.2015.00099 ISSN=1662-5129