[Skip to Navigation]
Progress in Pediatrics
May 1948


Am J Dis Child. 1948;75(5):754-759. doi:10.1001/archpedi.1948.02030020771014

This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.

First Page Preview View Large
First page PDF preview
First page PDF preview
Add or change institution