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FILE - May 16, 2011 file photo supplied by the South African Government Communications and Information Services, GCIS, showing former South African President Nelson Mandela and his wife Graca Machel at his home in Johannesburg, South Africa. Mandela was admitted to a hospital on Saturday March 9 2013 for a scheduled medical check-up and doctors say there is no cause for "alarm," the president's office said. Presidential spokesman Mac Maharaj said 94-year-old Mandela went in the afternoon for tests "to manage existing conditions in line with his age" at a hospital in Pretoria. (AP Photo/Elmond Jiyane-GCIS, File)

Associated Press
FILE  -  May 16, 2011 file photo supplied by the South African Government Communications and Information Services, GCIS, showing former South African President Nelson Mandela and his wife Graca Machel  at his home in Johannesburg, South Africa. Mandela was admitted to a hospital on Saturday March 9 2013 for a scheduled medical check-up and doctors say there is no cause for "alarm," the president's office said. Presidential spokesman Mac Maharaj said 94-year-old Mandela went in the afternoon for tests "to manage existing conditions in line with his age" at a hospital in Pretoria.  (AP Photo/Elmond Jiyane-GCIS, File)
FILE - May 16, 2011 file photo supplied by the South African Government Communications and Information Services, GCIS, showing former South African President Nelson Mandela and his wife Graca Machel at his home in Johannesburg, South Africa. Mandela was admitted to a hospital on Saturday March 9 2013 for a scheduled medical check-up and doctors say there is no cause for "alarm," the president's office said. Presidential spokesman Mac Maharaj said 94-year-old Mandela went in the afternoon for tests "to manage existing conditions in line with his age" at a hospital in Pretoria. (AP Photo/Elmond Jiyane-GCIS, File)
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