Dr. Anthony Fauci discusses his memoir, On Call: A Doctor's Journey in Public Service. His memoir reaches back to his boyhood in Brooklyn, New York, and carries through decades of caring for critically ill patients, navigating the whirlpools of Washington politics, and behind-the-scenes advising and negotiating with seven presidents on key issues from global AIDS relief to infectious disease preparedness at home. Dr. Fauci spoke to Bloomberg's Carol Massar and Tim Stenovec.