Giant photographs of former president Nelson Mandela are displayed at the Nelson Mandela Legacy Exhibition at the Civic Centre in Cape Town, South Africa, Thursday, June 27, 2013. President Jacob Zuma canceled a trip to Mozambique on Thursday in an indication of heightened concern about Mandela, whose health deteriorated last weekend. (AP Photo)

Associated Press
Giant photographs of former president Nelson Mandela are displayed at the Nelson Mandela Legacy Exhibition at the Civic Centre in Cape Town, South Africa, Thursday, June 27, 2013. President Jacob Zuma canceled a trip to Mozambique on Thursday in an indication of heightened concern about Mandela, whose health deteriorated last weekend. (AP Photo)
Giant photographs of former president Nelson Mandela are displayed at the Nelson Mandela Legacy Exhibition at the Civic Centre in Cape Town, South Africa, Thursday, June 27, 2013. President Jacob Zuma canceled a trip to Mozambique on Thursday in an indication of heightened concern about Mandela, whose health deteriorated last weekend. (AP Photo)
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