The studies are subject to the copyright notice and reuse policy of the European Commission. The studies have been carried out for the European Commission and express the opinions of the organisations having undertaken them. The views have not been adopted or in any way approved by the European Commission and should not be relied upon as a statement of the European Commission's views. The European Commission does not guarantee the accuracy of the information given in the studies, nor is it liable for any consequence stemming from the reuse of this publication.
February 2016
October 2010