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

Human rights court rules in favor of Olympic champion Semenya, testosterone rules may persist

Caster Semenya ruling: Why I changed my mind about rules regulating testosterone in sports.

Caster Semenya - latest news, breaking stories and comment - The Independent

Teenagers make 200 final in Olympic testosterone controversy

Olympics To Abandon Testosterone Criteria For Trans Women Athletes, Announces 'Framework On Fairness

Tokyo 2020 looks unlikely for Caster Semenya as she loses her testosterone rules appeal - Women's Running

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Olympian Caster Semenya wins appeal over testosterone rule

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IAAF Rules to Limit Testosterone Levels for Female Runners

International Olympic Committee issues new guidelines on transgender athletes

TOKYO ATHLETICS - キャップ

There Will Be a New 800-Meter Champion in Tokyo. Thank the Testosterone Rules. - WSJ

Olympics committee finally changes policy on trans athletes

Athletics - latest news, breaking stories and comment - The Independent