This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.
JAMA 75 YEARS AGO. JAMA. 1967;199(3):29–30. doi:10.1001/jama.1967.03120030009002
© 2022
Coronavirus Resource Center
Customize your JAMA Network experience by selecting one or more topics from the list below.