NEUROLOGY Geographic variation of MS incidence in two prospective studies of US women Miguel A. Hernan, Michael J. Olek and Alberto Ascherio Neurology 1999;53;1711- This information is current as of October 5, 2007 The online version of this article, along with updated information and services, is located on the World Wide Web at: http://www.neurology.org/cgi/content/full /53/8/1711 Neurology® is the official journal of the American Academy of Neurology. Published continuously since 1951, it is now a weekly with 48 issues per year. Copyright © 1999 by AAN Enterprises, Inc. All rights reserved. Print ISSN: 0028-3878. Online ISSN: 1526-632X. AMERICAN ACADEMY OF NEUROLOGY Downloaded from www.neurology.org by guest on October 5, 2007