Less than 1 %. : Failure rate with oc is less than 1 %. Usually rated at 0.3% if used appropriately. 8% if used haphazardly.
Answered 10/3/2016
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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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