The estate of late Beatle George Harrison is suing the cancer doctor who treated the legendary performer, claiming he coerced Harrison into autographing a guitar for his teenage son two weeks before his death. The $10 million lawsuit — filed Monday by the singer's widow, Olivia, and their son, Dhani — says Dr. Gilbert Lederman guided a weakened Harrison as he wrote his name "with great effort and much obvious discomfort." A photograph of the physician's son holding the guitar appeared in the National Enquirer shortly after Harrison's death in 2001. The doc's attorney calls the suit "absurd."