Bibliographical noteFunding Information:
*This work was supported by grant number MH25478-07, from the National Institute of Mental Health. From the National Institute of Mental Health-Clinical Research Branch Collaborative Program on the Psychobiology of Depression: Clinical Studies. The study reported on in this article is being conducted with the cooperation and participation of the Collaborative Program Investigators: Robert M. A. Hirschfeld, M.D. (Project Director and Co-chairperson), M. M. Katz, Ph.D. (NIMH); Gerald L. Klerman, M.D. (Chairperson), Martin B. Keller, M.D. and Robert W. Shapiro, M.D. (Boston); Jan A. Fawcett, M.D. and William A. Scheftner, M.D. (Chicago); Nancy C. Andreasen, M.D., William Coryell, M.D. and George Winokur, M.D. (Iowa City); Jean Endicott, Ph.D. and Robert L. Spitzer, M.D. (New York); and Paula J. Clayton, M.D., Theodore Reich, M.D., Jack Croughan, M.D., Samuel Guze, M.D. and Eli Robins, M.D. (St. Louis). The authors wish to acknowledge the careful review of this work by the Publication Committee of the Psychobiology of Depression Study (Drs Nancy C. Andreasen, Jean Endicott, Jan A. Fawcett. Robert M. A. Hirschfeld, Gerald L. Klerman and Theodore Reich) and the other participating investigators, that was of great assistance in the interpretation of this data and final manuscript preparation. Maria Roth and Barbara Strom also provided valuable assistance in the writing of this manuscript. Requests for reprints should be sent to: Martin B. Keller, M.D., Department of Psychiatry, Massachusetts General Hospital, Boston, MA 02114, U.S.A. (617) 726-8467. ?Deceased 26 October 1980.