Mandela suffers on a lung infection. From December 2012 to April 2013 he remained in a hospital. He had already a procedure to remove gallstone.<ref>http://www.foxnews.com/world/2013/03/31/south-africa-mandela-remains-in-hospital/</ref> On Aril 6, 2013 he left the hospital.<ref>http://www.foxnews.com/world/2013/04/06/nelson-mandela-discharged-from-hospital-south-africa-says/</ref>
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Mandela suffers on a lung infection. From December 2012 to April 2013 he remained in a hospital. He had already a procedure to remove gallstone.<ref>http://www.foxnews.com/world/2013/03/31/south-africa-mandela-remains-in-hospital/</ref> On Aril 6, 2013 he left the hospital<ref>http://www.foxnews.com/world/2013/04/06/nelson-mandela-discharged-from-hospital-south-africa-says/</ref>, but returned again in June 2013.<ref>http://www.foxnews.com/world/2013/06/08/south-africa-mandela-taken-to-hospital/</ref>