Not sterile immediately after surgery. Wait about 3 months or after ejaculation semen is at least 20 times, then you should make the semen that found whether or not sperm. To confirm your sterility because after sterilization the semen, there is still residual sperm in a sperm-carrying tube, again for a period of time, and therefore, after the sterilization of men, so women should continue contraceptive before condoms or until over that period, but that of course is a review of the semen and sperm.
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