
World Health Organization Director-General Margaret Chan (R) attends the opening of the 70th World Health Assembly, in Geneva, Switzerland, May 22, 2017. (Xinhua/Alain Grosclaude)

World Health Organization Director-General Margaret Chan (R) attends the opening of the 70th World Health Assembly, in Geneva, Switzerland, May 22, 2017. (Xinhua/Alain Grosclaude)