Autor:	An, Ping, Nelson, George W., Wang, Lihua, Donfield, Sharyne, Goedert, James J., Phair, John, Vlahov, David, Buchbinder, Susan, Farrar, William L., Modi, William, O'Brien, Stephen J., Winkler, Cheryl A.
Zdroj:	Proceedings of the National Academy of Sciences of the United States of America, 2002 Jul . 99(15), 10002-10007.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/3059324 Zobrazit plný text záznamu