Program and organization were the most important questions discussed at the First Assembly of the World Health Organization, which was held in Geneva from June 24 to July 24, 1948. Dr. Andrija Stampar (Yugoslavia), who had been chairman of the Interim Commission, was elected president by acclamation. An Executive Board of eighteen members representing the following countries was chosen: Australia, Brazil, Byelorussia, Ceylon, China, Egypt, France, India, Iran, Mexico, Netherlands, Norway, Poland, Union of South Africa, USSR, United Kingdom, United States, and Yugoslavia. A system was adopted whereby the Board Members would draw by lot for the duration of their terms of office. Dr. Brock Chisholm (Canada) was elected Director-General of the organization, which had a membership of 52 countries.