The<unk>  is an assisted reproductive technology for sex selection, used before implantation. In this method, sperm that will give rise to male versus female children are separated by moving at different speeds through a protein solution. When used to increase the likelihood of a female child, studies have resulted in between 70% and 80% female children. When used to increase the likelihood of a male child, studies have resulted in between 50% to 75% male children.
Ericsson method
Jaeger chart
McKenzie method
Ponseti method
Tessys method
Alpins method
Reed–Muench method
Welner table