Autor:	Cruickshank, Rona A., Dale, Jeremy, Bache, John, Heyworth, John, Pledge, M., Porter, J. E., St. George, David, George, Steve, Read, Susan, Westlake, Linda, Williams, Brian, Fraser-Moodie, Alistair, Pritty, Paul
Zdroj:	BMJ: British Medical Journal, 1992 May . 304(6838), 1378-1379.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/29715709 Zobrazit plný text záznamu