Eric Walker added The Sources and Modes of Infection to Charles V Chapin

Eric Walker added Charles V. Chapin - Wikipedia to Charles V Chapin

Eric Walker added Opinion | Why Covid's Airborne Transmission Was Acknowledged So Late - The New York Times to a number of topics

Eric Walker added a number of links to Charles V Chapin, and added Charles V Chapin to People in medicine

Eric Walker added Charles V Chapin and Ignaz Semmelweis to People in medicine, and added People in medicine to People and Medicine, drugs and healthcare