TRANSVAGINAL SONOGRAPHY COMBINED WITH SALINE CONTRAST SONOHYSTEROGRAPHY IN EVALUATING THE UTERINE CAVITY IN PREMENOPAUSAL PATIENTS WITH ABNORMAL UTERINE BLEEDING Article Forman A., Jensen M.L., Laursen H., Kracht P., Dueholm M. Ultrasound in Obstetrics & Gynecology. John Wiley & Sons. Vol. 18. 2001. P. 54-61