[1] JOHNS HOPKINS UNIV, DEPT PATHOL, BALTIMORE, MD USA
[2] NCI, EARLY DETECT BRANCH, BETHESDA, MD USA
[3] NCI, ENVIRONM EPIDEMIOL BRANCH, BETHESDA, MD 20892 USA
[4] UNIV MASSACHUSETTS, DEPT OBSTET & GYNECOL, WORCESTER, MA USA
[5] UNIV CHICAGO, SCH MED, DEPT OBSTET & GYNECOL, CHICAGO, IL 60637 USA
[6] UNIV ROCHESTER, SCH MED, ROCHESTER, NY USA
[7] UNIV KANSAS, LAWRENCE, KS USA
[8] BRIGHAM & WOMENS HOSP, BOSTON, MA USA
[9] MEM HOSP CANC & ALLIED DIS, NEW YORK, NY USA
[10] GRAD HOSP PHILADELPHIA, PHILADELPHIA, PA USA
[11] UNIV ARIZONA, TUCSON, AZ USA
[12] GEORGETOWN UNIV, SCH MED, WASHINGTON, DC USA
[13] CTR DIS CONTROL & PREVENT, ATLANTA, GA USA
[14] VANDERBILT UNIV SCH MED, NASHVILLE, TN USA
[15] AMER COLL OBSTETRICIANS & GYNECOLOGISTS, WASHINGTON, DC USA
[16] EMORY UNIV, SCH MED, ATLANTA, GA USA
[17] MONTEFIORE MED CTR, BRONX, NY USA
[18] LONG ISL JEWISH MED CTR, NEW HYDE PK, NY USA
[19] SACRED HEART HOSP, ALLENTOWN, PA USA
[20] MEM SLOAN KETTERING CANC CTR, NEW YORK, NY USA
[21] CARSON CTR, SOUTHFIELD, MI USA
[22] SLOANE HOSP WOMEN, NEW YORK, NY USA
[23] NATL LIB MED, BETHESDA, MD USA
[24] CLEVELAND CLIN FDN, CLEVELAND, OH USA
[25] SYNCHROCELL, SILVER SPRING, MD USA
[26] AMER SOC CLIN PATHOLOGISTS, CHICAGO, IL USA
[27] UNIV MINNESOTA, SCH MED, MINNEAPOLIS, MN USA
[28] UNIV FLORIDA, COLL MED, GAINESVILLE, FL USA
[29] AMER SOC CLIN PATHOLOGISTS, PHILADELPHIA, PA USA
[30] AMER CANC SOC, MIAMI, FL USA
[31] SOC GYNECOL ONCOLOGISTS, CHARLESTON, SC USA
[32] AMER COLL PHYSICIANS, ATLANTA, GA USA
[33] AMER ACAD FAMILY PRACTICE, HOUSTON, TX USA
[34] COLL AMER PATHOLOGISTS, WICHITA, KS USA
[35] AMER COLL OBSTETRICIANS & GYNECOLOGISTS, WORCESTER, MA USA
[36] GYNECOL ONCOL GRP, PHILADELPHIA, PA USA
[37] AMER SOC INTERNAL MED, JEFFERSON CITY, MO USA