Occupational respiratory diseases in South Africa: results from SORDSA 1997 – 1999 Author: Esterhuizen TM, Rees D, Hnizdo E, Kielkowski D. Source: Int J Occup Environ Hlth. 2001;7:S48. Babalwa Jekwa2019-04-03T12:13:35+02:00Dec 31st, 2001| Share This Page, Choose Your Platform! FacebookTwitterLinkedInWhatsappEmail