CORRESPONDENCE.

Autor: Gotink, Marinu H., Ralitapole, Deborah K., Farrell, Michael, Strang, John, Drake, John, Ballard, R., Eadington, David W., Frier, Brian M., Philip, I., Young, J., Somerville, Kevin, McCartney, P., Burns, Alistair, Levy, Raymond, Jacoby, Robin, Homer, Ann C., Lantos, P.L., Hastle, I.R.

Publikováno v: BMJ: British Medical Journal (International Edition); 11/26/88, Vol. 297 Issue 6660, p1402, 7p, 1 Diagram, 3 Charts