CORRESPONDENCE.

Autor: Arosstam, A., Bart, Julian Tudor, Dawes, P.J., Cox, C.J., El Wood, J. MarK, Brown, David, Gropper, Linda, Lees, David, Gardner, Sylvia, Fisher, Judith M., Nott, Peter N., Steel, Elizabeth A., Baranowski, A.P., Mathias, J., Harnis, M., Yickers, M.D., Abrams, Michael, Walker, Michael

Publikováno v: BMJ: British Medical Journal (International Edition); 11/19/88, Vol. 297 Issue 6659, p1331, 9p, 6 Charts, 1 Graph