Tuberculosis and silica exposure in South African gold miners
J M teWaterNaude, R I Ehrlich, G J Churchyard, L Pemba, K Dekker, M Vermeis, N W White, M L Thompson, J E Myers
Occupational and Environmental Medicine Mar 2006, 63 (3) 187-192; DOI: 10.1136/oem.2004.018614