[Skip to Content]
[Skip to Content Landing]
April 13, 1970

British Medical Journal, London

JAMA. 1970;212(2):341-345. doi:10.1001/jama.1970.03170150095045

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