| Original language | English (US) |
|---|---|
| Pages (from-to) | 785-787 |
| Number of pages | 3 |
| Journal | American journal of epidemiology |
| Volume | 142 |
| Issue number | 8 |
| DOIs | |
| State | Published - Oct 15 1995 |
Bibliographical note
Funding Information:Received for publication May 10,1994, and in final form February 6, 1995. Abbreviation: NIH, National Institutes of Health. From the Obstetrics and Gynecology Epidemiology Center, Brigham and Women's Hospital, Harvard Medical School, 221 Longwood Ave., Boston, MA 02115. (Reprint requests to Dr. Bernard Harlow at this address).