CORRESPONDENCE.

Autor: Hall, M.R.P., Calford, J.C., Crowie, G.H., Hitchcock, E.R., Carvell, J., Wairers, Ruth M., Whiner, T.D., Sakula, A., Aguis, E., McColl, K.E.L., Greenway, B., Becreton, R.J., Choyce, D.P., Josephs, C., Wilson, A.E., Grayson, M.C., Marlow, A.M., Price, L.A.

Publikováno v: British Medical Journal (Clinical Research Edition); 2/19/1983, Vol. 286 Issue 6365, p639, 11p, 3 Charts, 1 Graph