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Author's bio:*Required Colin Crowell is the Head of Global Public Policy and Philanthropy at Twitter. He is a telecommunications and Internet technology policy expert in Washington, D.C., who worked for over two decades for Congressman Ed Markey (D-Mass.) the former chairman of the Subcommittee on Telecommunications and the Internet of the House of Representatives Committee on Energy and Commerce.
Medical practitioner who is regarded as the father of medicine
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