Autor:	Higgins, Craig D., Swerdlow, Anthony J., Macsween, Karen F., Harrison, Nadine, Williams, Hilary, McAulay, Karen, Thomas, Ranjit, Reid, Stuart, Conacher, Margaret, Britton, Kathryn, Crawford, Dorothy H.
Zdroj:	The Journal of Infectious Diseases, 2007 Feb . 195(4), 474-482.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/30087110 Zobrazit plný text záznamu