Autor:	Melville, Arabella, Crawford, Fay, Syer, Sally E. M. Bell, Torgerson, David J., Young, Philip, Russell, Ian, Hart, Rachel, Barton, Stuart
Zdroj:	BMJ: British Medical Journal, 2001 May . 322(7297), 1306-1307.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/25467018 Zobrazit plný text záznamu