Obstruction of the pulmonary artery by granulomatous vasculitis: a clinical, morphological, and immunological analysis. Issue 5 (1st May 2002) - Schett, G; Winkler, S; Hollenstein, U; Amann, G; Willheim, M; Prokop, M; Klepetko, W; Becherer, A; Smolen, J; Graninger, W