FOR EUROPE

project was co-sponsored by the European Commission. The views expressed in this report can in no way be taken to reflect the official opinion of the European Commission or the World Health Organization. The designations employed and the presentation of the material in this report do not imply the expression of any opinion whatsoever concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. The World Health Organization does not warrant that the information contained in this publication is complete and correct and shall not be liable for any damages incurred as a result of its use.