 Complete the following phrase:  Bhutto was suspected of suffering from cancer in 1982, the year when she left Pakistan for medical treatment. For the last several years of her life, she had also been suffering from Alzheimers disease. In the mid-1990s, particularly after the death of her son Mir Murtaza Bhutto in 1996, she withdrew from public life. Party sources suggest this may also have coincided with the time that she began to show symptoms of Alzheimers. According to her senior party leader, Bhuttos disease was so advanced that she was even unaware of the 