Working together to grow libraries in developing countries www.elsevier.com | www.bookaid.org | www.sabre.org The Curtis Center 170 S Independence Mall W 300E Philadelphia, Pennsylvania 19106 ATLAS OF SLEEP MEDICINE ISBN 0-7506-7398-2 Copyright 2005, Elsevier, Inc. All rights reserved. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher. Permissions may be sought directly from Elsevier’s Health Sciences Rights Department in Philadelphia, PA, USA: phone: (+1) 215 238 7869, fax: (+1) 215 238 2239, e-mail: