1. 
   Yoon Ring
   A nonreactive rubber band that is used for closing each fallopian tube as a procedure for female sterilization. The ring is placed around a 2-3 cm segment of fallopian tube, after being drawn inside a narrow cone-shaped applicator. Because the closed segment is deprived of blood, it will eventually ...
   Found op http://www.pregnology.com/AZ/Y/1
   
   

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