Since 1976, he has written a syndicated column on these subjects for The Washington Post and other newspapers, and for the past 10 years he has corresponded for the British journal The Lancet, covering health politics in Washington. While continuing these writings, he is now a visiting scholar in the Department of History of Science, Medicine and Technology at Johns Hopkins University while writing a book to be published this year by the University of Chicago Press. Mr. Greenberg's articles have appeared in many well-known journals.