Autor:	Howden-Chapman, Philippa, Pierse, Nevil, Nicholls, Sarah, Gillespie-Bennett, Julie, Viggers, Helen, Cunningham, Malcolm, Phipps, Robyn, Boulic, Mikael, Fjällström, Pär, Free, Sarah, Chapman, Ralph, Lloyd, Bob, Wickens, Kristin, Shields, David, Baker, Michael, Cunningham, Chris, Woodward, Alistair, Bullen, Chris, Crane, Julian
Zdroj:	BMJ: British Medical Journal, 2008 Oct 01. 337(7674), 852-855.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/20511072 Zobrazit plný text záznamu