Autor:	Bradstock, M. Kirsten, Marks, James S., Forman, Michelle, Gentry, Eileen M., Hogelin, Gary, Trowbridge, Frederick L.
Zdroj:	Morbidity and Mortality Weekly Report: Surveillance Summaries, 1984 Jan 01. 33(1SS), 1SS-4SS.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/44784321 Zobrazit plný text záznamu