Graca Machel was also given a personal award for her renowned global advocacy for women and children's rights.
South Africa's ailing anti-apartheid hero and former President Nelson Mandela remained in a "critical but stable" condition after nearly four weeks in hospital, the government said on Thursday.
Mandela was admitted to a Pretoria hospital on December 8 and this was his longest stay in hospital since he was released from prison in 1990.
Mandela was diagnosed with a lung infection and also had a procedure to remove gallstones.
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