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CorrespondenceBengt Sjögren, Per Larsson, Zhiping Wang, Håkan Carlsson, Eva Grimvall, Andreas Zober, M. Gerald Ott, M. O'Donnell, G. W. Kneale, A. M. Stewart, Morris Greenberg, A. T. Edwards, D. Whitaker, K. Browne, F. D. Pooley, A. R. Gibbs, Eric S. Johnson, Choon-Nam Ong and William H. James · Occupational and Environmental Medicine · 1997