From the story on the front page:
http://sportsscientists.com/2016/05/hyperandrogenism-women-vs-women-vs-men-sport-qa-joanna-harper/While Caster Semenya has gotten most of the media attention, she is far from the only presumably intersex athlete to have competed at a very high level in athletics. In fact two of the three medalists in the 800 meter race at the recent indoor world championships are probably intersex. It is very possible that we could see an all intersex podium in the 800 in Rio, and I wouldn’t be surprised to see as many as five intersex women in the eight-person final.
The 800m medalists in Portland were:
1st Francine Niyonsaba Burundi 2:00.01
2nd Ajee' Wilson United States 2:00.27
3rd Margaret Nyairera Wambui Kenya 2:00.44
Who is Joanna Harper saying is probably intersex and on what basis? I haven't heard any controversy about these three.