The Doctoral Program requiring 4-5 years to complete, covers core curriculum including applied economics, public health science, international relations and diplomacy, population science, and environmental science, political science, and other theoretical and professional courses in humanities and social sciences. A doctoral candidate must complete required credit hours for graduate work, pass comprehensive qualification examination and field specialized examinations, conduct academic research and write doctoral thesis and dissertation with theoretical and/or practical contributions to major issues of global health and human development under the supervision of advisers, and pass the dissertation defense. A doctoral degree will be conferred to a candidate after his or her successful completion of required credits and dissertation.