Swimmers get supplements during the women's 10km open water race, part of marathon swimming events at Fort Copacabana in the Rio 2016 Olympic Games, Aug. 15, 2016. (Photo/Agencies)
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Swimmers get supplements during the women's 10km open water race, part of marathon swimming events at Fort Copacabana in the Rio 2016 Olympic Games, Aug. 15, 2016. (Photo/Agencies)
