Autor:	Maskrey, Neal, Parkinson, Martin, Siriwardena, A. N., Walters, Antony, Weightman, Nigel C., McDonald, Paula, Friedman, Ellis, Banks, Alan, Anderson, Ros, Carman, Val, Doherty, M. J., Greenstone, M. A., Meigh, R.
Zdroj:	BMJ: British Medical Journal, 1997 Sep . 315(7111), 815-816.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/25175814 Zobrazit plný text záznamu