As the pop icon's personal physician denied any role in the mysterious death, the Jacksons - following a day-long meeting at the family's California compound - had a followup autopsy conducted in Los Angeles, TMZ.com reported. The star's incensed father, Joe Jackson, in his first public comments since his son died Thursday, said he is desperate to learn what caused his boy's sudden death. "That's what we're trying to find out right now," Joe Jackson told People magazine. "There's a lot to be told, though, I'll tell you that right now. ... The truth is still to be told. "We...