by Hennessy, T.W. (Minnesota Department of Health, Minneapolis, MN.), Hedberg, C.W, Slutsker, L, White, K.E, Besser-Wiek, J.M, Moen, M.E, Feldman, J, Coleman, W.W, Edmonson, L.M, MacDonald, K.L
Published in The New England journal of medicine (16.05.1996)