by Dixon, Rumona, Glenny, Anne-Marie, Eastwood, Alison, Sharp, Deborah Lister, Fullerton, Deidre, Petticrew, Mark, Sheldon, Trevor, Laekeman, Gert M., Stichele, R. H. Vander, Bogaert, M. G., Dezeure, E.
Published in BMJ (13.01.1996)