Contraception should be something that everyone has done before, so that they can get pregnant when they want to. So many people choose contraception to help themselves. But many people are not very clear about contraceptive methods, and even do not know what the method of using condoms is. Does it affect the effectiveness of wearing the condom backwards and...

　　For infertile families, it is really a difficult thing. A child is very important to a family, but if it is really infertility, it is best to actively treat it. It can be cured, but perhaps many people are not very clear how long it takes to do it or how long it takes to do infertility treatment? How long...