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HSG versus HyFoSy: is there a difference in VAS-painscores between these two tubal patency tests?

To determine wether a HyFoSy is a less painful procedure compared to a HSG examination for tubal patency testing

OIL - BASED CONTRAST VERSUS WATER BASED CONTRAST MEDIA IN THE DIAGNOSIS OF TUBAL PATENCY AT HYSTEROSALPINGOGRAPHY

To determine whether flushing of the fallopian tubes is more effective with an oil based contrast medium or a water based contrast medium in terms of ongoing pregnancy.