I believe we've already waited 10 years. That's why it's “10+”—the oldest trials are about 10 years old at this point, and the effect is still the same (as far

I believe we've already waited 10 years. That's why it's “10+”—the oldest trials are about 10 years old at this point, and the effect is still the same (as far as I've been able to read). More, as usual, at http://en.wikipedia.org/wiki/Reversible_inhibition_of_sperm_under_guidance http://en.wikipedia.org/wiki/Reversible_inhibition_of_sperm_... , including critique.