Depression and anxiety related subtypes in Parkinson's disease
Richard G Brown, Sabine Landau, John V Hindle, Jeremy Playfer, Michael Samuel, Kenneth C Wilson, Catherine S Hurt, Rachel J Anderson, Joanna Carnell, Lucy Dickinson, Grant Gibson, Rachel van Schaick, Katie Sellwood, Bonnita A Thomas, David J Burn, for the PROMS-PD Study Group*
Journal of Neurology, Neurosurgery & Psychiatry Jul 2011, 82 (7) 803-809; DOI: 10.1136/jnnp.2010.213652