K Ray Chaudhuri & Pablo Martinez-Martin 
Handbook of Non-Motor Symptoms in Parkinson’s Disease [PDF ebook] 

Introduction.- The burden of non-motor symptoms.- Assessing non-motor symptoms: an overview of scales and questionnaires.- An in-depth look at the Non-Motor Symptom Scale.- Neuropsychiatric symptoms.- Sleep-related symptoms.- Bladder dysfunction.- Sensory symptoms.- Sexual symptoms.- Gastrointestinal symptoms.- Other symptoms.

K Ray Chaudhuri is a Consultant Neurologist and Professor in Neurology and Movement Disorders at King’s College Hospital NHS Foundation Trust, University Hospital Lewisham, King’s College London and the Institute of Psychiatry, London, UK.
Pablo Martinez-Martin, MD, Ph D, is a neurologist and official researcher of the Spanish Public Boards of Research.
Per Odin completed his medical education and received his Ph D from the University of Uppsala, Sweden.
Angelo Antonini, MD, Ph D, is Professor of Neurology and Director of the Parkinson Department at the Institute of Neurology IRCCS San Camillo in Venice.