Autor:	Keatinge, Richard, Mead, G. E., O'Neill, P. A., Parry, A. D., McCollum, C. N., Wolfe, J. H. N., Humphrey, Peter, Enevoldson, Peter, Young, Gavin, Harris, Peter, Bell, P. R. F., Aldoori, M. I., Beard, J. D.
Zdroj:	BMJ: British Medical Journal, 1995 Apr . 310(6987), 1135-1136.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/29727127 Zobrazit plný text záznamu