1. Women’s Health Research Center (J.S.), Laurel, Maryland 20707;
2. Cedars-Sinai Medical Center (G.B.), Los Angeles, California 90048;
3. New York University School of Medicine (L.N.), New York, New York 10016;
4. Rapid Medical Research (W.U.), Cleveland, Ohio 44122;
5. Katz, Kade, and Hewitt, Inc. (M.K.), Cincinnati, Ohio 45219;
6. S. A. M. Clinical Research Center (S.M.), San Antonio, Texas 78229;
7. Downtown Women’s Health Care (A.W.), Denver, Colorado 80202;
8. Clinique RSF, Inc. (C.B.), Quebec, Canada G1S 2L6;
9. St. Michael’s Hospital Health Center (C.D.), Toronto, Canada M5B 1W8;
10. Procter & Gamble Pharmaceuticals Health Care Research Center (A.B., C.R., J.L.), Mason, Ohio 45040;
11. The Jean Hailes Foundation, Research Unit (S.D.), Clayton, Australia VIC 3168;
12. Department of Medicine (S.D.), Monash University, Praham, Victoria, Australia VIC 3800