Very low : If you use them correctly the chances are very very low.
Answered 3/7/2013
5.3k views
<12% if perfect use: Problem is that many people dont use them perfectly.
Answered 10/4/2016
5.3k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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