- The American College of Rheumatology 1990 criteria for the classification of Wegener's granulomatosis. Leavitt, R.Y., Fauci, A.S., Bloch, D.A., Michel, B.A., Hunder, G.G., Arend, W.P., Calabrese, L.H., Fries, J.F., Lie, J.T., Lightfoot, R.W. Arthritis Rheum. (1990)