jointly organized by the World Health Organization and the International Atomic Energy Agency. jointly sponsored by the United Nations and the International Atomic Energy Agency. The United Nations and the International Atomic Energy Agency. by the Food and Agriculture Organization of the United Nations and the International Atomic Energy Agency. by the OECD Nuclear Energy Agency and the International Atomic Energy Agency. jointly organized by the Food and Agriculture Organization of the United Nations, the International Atomic Energy Agency and the World Health Organization. organized by the International Atomic Energy Agency. jointly organized by the Metals Society and the Institute of Physics.