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(FromR) Australia's Emma Mckeon, Australia's Brittany Elmslie, Australia's Bronte Campbell and Australia's Cate Campbell pose with their gold medals on the podium after they broke the world in the Women's 4 x 100m Freestyle Relay Final during the swimming event at the Rio 2016 Olympic Games at the Olympic Aquatics Stadium in Rio de Janeiro on August 6, 2016. / AFP / CHRISTOPHE SIMON (Photo credit should read CHRISTOPHE SIMON/AFP via Getty Images)

(FromR) Australia's Emma Mckeon, Australia's Brittany Elmslie, Australia's Bronte Campbell and Australia's Cate Campbell pose with their gold medals on the podium after they broke the world in the Women's 4 x 100m Freestyle Relay Final during the swimming event at the Rio 2016 Olympic Games at the Olympic Aquatics Stadium in Rio de Janeiro on August 6, 2016.   / AFP / CHRISTOPHE SIMON        (Photo credit should read CHRISTOPHE SIMON/AFP via Getty Images)