Affiliation: | (1) Department of Pulmonology, Semmelweis Medical School, Budapest, Hungary, HU;(2) Institute of Pathology, University Clinic Bergmannsheil, Bürkle-de-la-Camp Platz 1, D-44789 Bochum, Germany Tel.: (++49) 234-302 6600, Fax: (++49) 234-302-6671 e-mail: patho-bhl@ruhr-uni-bochum.de, DE;(3) Professional Associations’ Research Institute for Occupational Medicine, Bochum, Germany, DE |