Karl Neumann, M.D., is the editor and publisher of Traveling Healthy and a syndicated columnist whose articles on travel medicine have appeared in hundreds of newspapers and magazines, including The New York Times, Washington Post, New York Newsday, Los Angeles Times, Chicago Tribune, Travel & Leisure, McCalls, and Prevention. Dr. Neumann is a physician in private practice in New York City. Maury Rosenbaum is the publisher of The Diabetic Traveler and president of Mercury Marketing in Stamford, CT. Both are frequent business travelers.