Complex sentence: As late as 1991, Burr stood by the account of his son's life and death; he told "Parade" magazine that when he realized Michael was dying, he took him on a one-year tour of the United States.
Split into simpler sentences: As late as 1991, Burr stood by the account of having had a son and the details of this son's life and death. He told "Parade Magazine" that when he realized Michael was dying, he took him on a one-year tour of the United States.