Tokyo 2020: What are the testosterone rules in women's athletics?

The complex testosterone regulations in track and field have become an issue again at the Olympics after two teenagers from Namibia qualified for the women’s 200-meter final

New Olympic eligibility rules a win for trans athletes

Mboma and Masilingi to miss Olympic 400m over World Athletics testosterone rules

Namibian teens stoke new Olympic testosterone controversy

Testosterone Levels in Olympics: No Level-playing Field for Trans Women?

EXPLAINER: What exactly are track's testosterone rules?

Semenya Misses Tokyo, May Be Forced Out of Olympics for Good – NBC Bay Area

Olympic Champion Caster Semenya Wins Human Rights Case but Testosterone Rules May Remain for Years

What Are Track's Testosterone Rules, How Do They Affect Olympics? – NBC 6 South Florida

Teenagers make 200 final in Olympic testosterone controversy