This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.
PROGRESS IN PEDIATRICS. Am J Dis Child. 1911;II(2):141–148. doi:10.1001/archpedi.1911.04100080078007
Pediatrics in JAMA: Read the Latest
Customize your JAMA Network experience by selecting one or more topics from the list below.