Autor:	Harte, G. A., Wade, Brian, Roman, Eve, Beral, Valerie, Carpenter, Lucy, Watson, Ann, Barton, Carol, Ryder, Hilary, Aston, D. Lynn
Zdroj:	British Medical Journal (Clinical Research Edition), 1987 May 01. 294(6581), 1227-1228.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/29526970 Zobrazit plný text záznamu