6Pace S, Catania R, Grassi A, et al. Preliminary diagnostic evaluation of submucosal myoma using operative hysteroscopy.Minerva Ginecol, 1997, 49 (12): 545~549
7Coccia ME, Becattini C, Bracco GL, et al. Intraoperative ultrasound guidance for operative hysteroscopy. A prospective study. J Repord Med, 2000, 45 (5): 413~418