Autor:	Graham, Ian, Mulcahy, Risteard, Hickey, Noel, Bourke, Geoffrey, Morris, J. N.
Zdroj:	British Medical Journal (Clinical Research Edition), 1983 Jul . 287(6388), 357-358.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/29511805 Zobrazit plný text záznamu