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To compare the therapeutic effects of cannulation guided by ultrasound or tactile sensation in women with proximal tubal obstruction.This prospective randomized study reports on outcomes for 50 women treated as outpatients, 25 by the ultrasound-guided method and 25 by the tactile sensation method.Of the 50 fallopian tubes in each group, 42 tubes (84%) were successfully cannulated by the ultrasound-guided...