(REUTERS) Hillary Clinton told the FBI she did not recall all the briefings she received on handling sensitive information as she made the transition from her post as U.S. secretary of state, due to a concussion suffered in 2012, according to a report released Friday. The Federal Bureau of Investigation released a summary of the July 2 interview it conducted with the Democratic presidential candidate, as well as other details of its investigation into her use of a private email server while heading the State Department.