From your own Wikipedia link: >Frank Dikötter, Chair Professor of Humanities at the University of Hong Kong and the author of Mao's Great Famine, estimated tha

From your own Wikipedia link: >Frank Dikötter, Chair Professor of Humanities at the University of Hong Kong and the author of Mao's Great Famine, estimated that at least 45 million people died from starvation, overwork and state violence during the Great Leap Forward, claiming his findings to be based on access to recently opened local and provincial party archives.