A women and her child walk past portraits of former South African President Nelson Mandela, painted by O.J. Zwane, in Soweto February 26, 2012. Mandela remained in hospital on Sunday after keyhole surgery that officials said had left him in no danger but increased South Africans' concerns for their aging former president. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: POLITICS HEALTH)