Mediclinic Heart Hospital

A group of kindergarten children sing Happy Birthday to Nelson Mandela outside the Mediclinic Heart Hospital where former South African President Nelson Mandela is being treated in Pretoria, South Africa Thursday, July 18, 2013. South Africa celebrated Nelson Mandela's 95th birthday on Thursday, a milestone capped by news that the former president's health was improving after fears that he was close to death during ongoing hospital treatment.

Ben Curtis/AP

Kindergarten children sing “Happy Birthday” to Nelson Mandela outside the Mediclinic Heart Hospital where he is being treated in Pretoria, South Africa

A woman from a prayer group plays an instrument on July 4, 2013 outside the Mediclinic Heart Hospital in Pretoria, where former South African President Nelson Mandela is staying. The exhumed remains of three of Nelson Mandela's children at the centre of an ugly family feud were due to undergo forensic tests today before reburial in the ailing anti-apartheid hero's childhood village. The public row comes as the 94-year-old former political prisoner, who became South Africa's first black president, lies critically ill in what is now his fourth week in hospital.

Marco longari/AFP

A woman from a prayer group plays an instrument on Thursday outside the Mediclinic Heart Hospital in Pretoria, where former South African president Nelson Mandela is staying. The exhumed remains of three of Nelson Mandela’s children at the centre of an ugly family feud were due to undergo forensic tests today before reburial in the anti-apartheid hero’s childhood village. The public row comes as the 94-year-old former political prisoner, who became South Africa’s first black president, lies critically ill in hospital.

Focus Continues To Surround The Hospital Where Nelson Mandela's Condition Is Said To Be Critical...PRETORIA, SOUTH AFRICA - JULY 01:  A man prays for Nelson Mandela outside the Mediclinic Heart Hospital where he is being treated for a lung infection on June 30, 2013 in Pretoria, South Africa. Nelson Mandela's ex-wife Winnie Madikizela-Mandela recently said that the Nobel peace prize laureate's condition has shown 'great improvement' but he is still critically ill.  (Photo by Jeff J Mitchell/Getty Images)

Jeff J Mitchell/Getty

A man prays for Nelson Mandela outside the Mediclinic Heart Hospital where he is being treated for a lung infection in Pretoria, South Africa.

A ruling African National Congress (ANC)...A ruling African National Congress (ANC) party supporter shouts slogans while dancing in support of former South African President Nelson Mandela outside the Mediclinic Heart Hospital in Pretoria, where the ailing leader is hospitalized on June 27, 2013. Nelson Mandela was in a "very critical" condition on life support Thursday, family members said, warning South Africa and the world that "anything is imminent" for the revered anti-apartheid hero.  AFP PHOTO/MARCO LONGARIMARCO LONGARI/AFP/Getty Images

Marco Longari/ AFP

An African National Congress party supporter outside the Mediclinic Heart Hospital in Pretoria shouts slogans while dancing in support of former South African president Nelson Mandela. Mr Mandela was in a “very critical” condition on life support, family members said. 

Prayers Are Said As Nelson Mandela Remains In a Critical Condition...PRETORIA, SOUTH AFRICA - JUNE 27:  Ninetly-five children release 95 balloons after praying for former President Nelson Mandela to mark the upcoming of his 95th birthday outside the Mediclinic Heart Hospital where Mandela is being treated for a recurring lung infection June 27, 2013 in Pretoria, South Africa. Family members and President Jacob Zuma have visited Mandela in the hospital today.

Chip Somodevilla/Getty

Ninety-five children release 95 balloons outside the Mediclinic Heart Hospital, Pretoria, after praying for Nelson Mandela, former president of South Africa, to mark his upcoming 95th birthday. Mr Mandela is being treated for a recurring lung infection. Family members and President Jacob Zuma visited Mr Mandela in the hospital on Thursday.