AP Photo/Karel PrinsA child kisses Nelson Mandela, Friday, July 31, during the launch of a children's hospital in Johannesburg, South Africa. South Africa's former president Nelson Mandela has combined his 91st birthday celebration with the opening of a new children's hospital. According to the Nelson Mandela Children's Fund, which spearheaded the project, the hospital will be the fifth devoted to providing specialist medical care to children on the continent. Two others are in Egypt, one is in Kenya, and the other is in Cape Town./p