Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. President Mugabe on Medical Trip to Asia VOA News March 05, 2011 Zimbabwe President Robert Mugabe (file photo) Photo: AP Zimbabwe President Robert Mugabe (file photo) A spokesman for Zimbabwe President Robert Mugabe says his three-day medical trip to Asia is " no cause for alarm". President Mugabe's spokesman says he went to Singapore Thursday for a follow up examination following cataract surgery last year. He is expected to return home on Sunday. Mugabe has spent a month in Asia for medical purposes since December, fueling doubts about the stability of his health. Zimbabwean officials have also refuted reports the 87-year-old leader has traveled to Asia for prostate cancer treatment. Mugabe has ruled Zimbabwe since 1980. Some information for this report was provided by AP, AFP and Reuters. .