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Muir, D C., J. Julian, N. Jadon, R. Roberts, J. Roos, J. Chan, W. Maehle, and W K. Morgan. Prevalence of Small Opacities in Chest Radiographs of Nickel Sinter Plant Workers. 1993.

Muir, D C., et al. Prevalence of Small Opacities in Chest Radiographs of Nickel Sinter Plant Workers. 1993.