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VISION

Striving to make every dive accident- and injury-free. DAN‘s vision is to be the most recognized and trusted organization worldwide in the fields of diver safety and emergency services, health, research and education by its members, instructors, supporters and recreational diving community at large.

MISSION

DAN helps divers in need with medical emergency assistance and promotes dive safety through research, education, products and services.

Divers Alert Network ® (DAN ® ), a nonprofit organization, exists to provide expert medical information for the benefit of the diving public.

DAN’s historical and primary function is to promote diving safety, to work to prevent diving injuries and to assist divers and their health-care providers in responding to underwater diving injuries should they occur. Second, DAN promotes and supports underwater dive research and education, particularly as it relates to the improvement of dive safety, medical treatment and first aid. Third, DAN strives to provide the most accurate, up-to-date and unbiased information on issues of common concern to the diving public, primarily — but not exclusively — for dive safety.

ALERT DIVER’S PHILOSOPHY

Alert Diver ® is a forum for ideas and information relative to dive safety, education and practice. Any material relating to dive safety or dive medicine is considered for publication. Ideas, comments and support are encouraged and appreciated. The views expressed by contributors are not necessarily those advocated by Divers Alert Network. DAN is a neutral public service organization that attempts to interact with all diving-related organizations or persons with equal deference.

Alert Diver is published for the use of the diving public, and it is not a medical journal. The use and dosage of any medication by a diver should be under the supervision of his or her physician.

DAN does not sell, lease or trade its mailing lists. The appearance of an advertisement in Alert Diver does not imply endorsement by DAN of any product or service shown. Individuals who reply to advertisements in Alert Diver understand that they are volunteering their information to the advertisers and are, therefore, subject to that company‘s mailing policies.

FOR SUBSCRIPTION OR MEMBERSHIP ASSISTANCE, PLEASE CALL +1-800-446-2671.

FOR ADVERTISING SALES, PLEASE CONTACT:

Steven "Ike" Eisenberg, National Sales Manager, steveike@alertdiver.com, +1-415-335-0201

Volume 27, No. 3

Alert Diver (ISSN 1084-2985) is published quarterly (four times yearly) by DAN Holdings, 6 West Colony Place, Durham, NC 27705 U.S.A.

Alert Diver is a DAN Membership benefit; memberships begin at $35 per year. Periodicals rates are paid in Durham, N.C., and other mailing offices.

POSTMASTER:

Send address changes to Alert Diver, Address Change, 6 West Colony Place, Durham, NC 27705 U.S.A.

CANADA POST

Publication Mail Product (Canadian Distribution) Sales Agreement No. 40030231

Inquiries or letters may be edited for clarity and length. All letters will be considered for publication.

Letters may be sent to: Editor, Alert Diver, 6 West Colony Place, Durham, NC 27705 U.S.A.

Text, illustrations or photographs in Alert Diver may not be reproduced or reprinted without the expressed

consent of DAN Holdings and its authors, artists and photographers. Alert Diver is printed in the U.S.A.

Alert Diver magazine’s printer is FSC certified, utilizing well-managed forestry and waste management practices while using soy-based inks.

DAN is a 501(c)(3) nonprofit organization. ID#56-1696689

SUMMER 2011

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Publisher Stephen Frink Interim Editorial Director Christine McTaggart Medical Editor Brian Harper Managing Editor Diana Palmer

Director of Manufacturing & Design Barry Berg Art Director Kenny Boyer Graphic Designers Rick Melvin, Diana Palmer

AlertDiver.com Maureen Halsema, Editor Mahin Manley, Coordinator Daniel Hall, Web Architect

DAN Holdings Management Team William Ziefle, President and CEO

Panchabi Vaithiyanathan, Vice President, Business Operations

DAN Holdings Board of Directors Philip Mintz, Chairman Bill Anlyan Lee Selisky Kathy Weydig Joe Poe, Ex-officio DAN, Inc. Management Team Dan Orr, M.S., President

Nicholas Bird, M.D., CEO and Chief Medical Officer

DAN, Inc. Board of Directors G. Jona Poe, Jr., J.D., LL.M., Chairman William G. Anlyan, Jr., J.D. Douglas N. Stracener, J.D. Albert Jose Jones, Ph.D. Wayne Massey, M.D.

William Ziefle, M.B.A., J.D., Director Emeritus (Non-Voting)

Research, Education & Medicine Nicholas Bird, M.D. Contributors Petar Denoble, M.D., D.Sc. Eric Douglas, BA, EMT, DMT John Lee, MSDT, EMT, CHT, DMT Marty McCafferty, EMT-P, DMT Matias Nochetto, M.D. Dan Nord, BFA, EMT-P, CHT Neal Pollock, Ph.D.