RT Journal Article SR Electronic T1 Transvaginal Ultrasound and Surveillance on Estrogen Therapy JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 526 OP 526 DO 10.3122/jabfm.6.5.526 VO 6 IS 5 A1 Kiser, W.R. A1 Runkle, Guy A1 Ellis, David D. A1 Nusbaum, Margaret R.H. A1 Kugler, John P. YR 1993 UL http://www.jabfm.org/content/6/5/526.1.abstract AB