Unfortunately, wide-ranging contraception programs do not usually reduce this rate.
不幸的是，广泛的避孕方案通常不会降低这一比率。
2
The results are most striking for the total fertility rate, which dropped from 6.3 children per woman in 1960 to 2.3 in 2000, despite contraception being officially discouraged for some of that time.
Conclusion: Reversible oviduct block contraception is a new method, its blocks being unlikely to drop out; safe and reliable, with good reversibility and high renewal rate of pregnancy.