Autor:	Ater, Joann L., Overall, James C., Yeh, Tze-Jou, O'Brien, Richard T., Bailey, Althea
Zdroj:	The Journal of Infectious Diseases, 1985 May 01. 151(5), 966-968.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/30135976