Controversies Surrounding the 2010 World Health Organization Cutoff Values for Human Semen Characteristics and Its Impact on Unexplained Infertility
Semen characteristics WHO 1980 WHO 1987 WHO 1992 WHO 1999 WHO 2010a Volume (mL) ND ≥ 2 ≥ 2 ≥ 2 1.5 Sperm count (106/mL) 20–200 ≥ 20 ≥ 20…