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All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Printed in the United States of America.

Cataloging-in-Publication data for this book is available from the Library of Congress.

First Da Capo Press edition 2007
First Da Capo Press paperback edition 2008
HC: ISBN-13: 978-0-7382-1083-4
PB: ISBN-13: 978-0-7382-1163-3
eBook ISBN: 9780786732302

Published by Da Capo Press
A Member of the Perseus Books Group
www.dacapopress.com

Note: The information in this book is true and complete to the best of our knowledge. This book is intended only as an informative guide for those wishing to know more about health issues. In no way is this book intended to replace, countermand, or conflict with the advice given to you by your own physician. The ultimate decision concerning care should be made between you and your doctor. We strongly recommend you follow his or her advice. Information in this book is general and is offered with no guarantees on the part of the authors or of Da Capo Press. The authors and publisher disclaim all liability in connection with the use of this book. The names and identifying details of people associated with events described in this book have been changed.

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