By International Agency for Research on Cancer, Breslow, N.E., Day, N. E.
By N.L. Harris, Elaine Sarkin Jaffe, H.J. Stein, J.W. Vardiman, International Agency for Research on Cancer
By Fattaneh A. Tavassoli, Peter Devilee
By Rothman, N., International Agency for Research on Cancer, World Health Organization
By F.Sant M. Berrino, etc., M. Sant (both of the Lombardy Cancer Registry, Milan, Italy), A. Verdecchia, R. Capocaccia (both of the Istituto Superiore di Sanita, Rome