Open Access Gastroscopy

Autor: Cann, P. A., Bramble, M. G., Corbett, W. A., Contractor, B., Hungin, A. S., Zermansky, Arnold, Malcolm, P. N., Chan, T. Y. K., Hately, W.
Zdroj: BMJ: British Medical Journal, 1993 Jun . 306(6894), 1750-1751.
Databáze: JSTOR Journals