By Nick Mulvenney SYDNEY (Reuters) - Australian Olympic champion rower Kim Brennan has spoken of her deep disappointment that her integrity as a clean athlete has been called into question over a shot of adrenaline administered in a medical emergency. Brennan, who won gold in the single skulls at the Rio Olympics, was one of 11 athletes whose medical data was leaked on Friday by a Russian hacking group, which is known as APT28 and Fancy Bear by U.S. cyber-security researchers. The documents leaked included details of a Therapeutic Use Exemption (TUE) granted to Brennan after she was administered adrenalin in a hospital emergency room following a severe allergic reaction in January 2014, Rowing Australia said in a statement. More...