LETTERS.

Autor: Flegg, Peter J., Rielly, Sheena, Prentice, A.G., Copplestone, J.A., Hamon, M.D., Sarange, Joyshri, Makris, M., Greaves, M., Winfield, D.A., Preston, F.E., Lilleyman, J.S., Finch, R.G., Read, R., Baddeley, Peter, Boyer, Penny, Mayon-White, Dick, Cooke, R.P.D., Gover, P.A.

Publikováno v: BMJ: British Medical Journal (International Edition); 1/8/94, Vol. 308 Issue 6921, p131, 9p, 3 Charts, 1 Graph