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NEWS & REVIEWS REVIEWS NEWS Chronic pain a substantial burden for Society – SIP 2010-2011 Professor Giustino Varrassi Professor Giustino Varrassi Dr Gerhard H.H. Müller-Schwefe EDITORS Supported by an educational grant from Grünenthal CHANGE PAIN Patient Survey – for a better understanding of patients‘ needs Dr Gerhard H.H. Müller-Schwefe Results of the National Health & Wellness Survey 2008 and 2010 Professor Paul Langley Chronic pain definition – introducing the Risk Score approach Professor Joseph Pergolizzi Issue No 4 l ISSN 2041-8558