Autor:	Rule, Simon A. J., O'Brien, Stephen G., Spencer, Andrew, Apperley, Jane, Goldman, John M., Rainey, M. Glenn, Hows, Jill M., Harding, Maggie, Soutar, Richard L., King, Derek J.
Zdroj:	BMJ: British Medical Journal, 1995 Apr 01. 310(6983), 874-875.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/29726847 Zobrazit plný text záznamu