Surveillance of occupational respiratory diseases in South Africa.
Hnizdo
E
E
Rees
D
D
Saader
N
N
D006801:Humans; D009784:Occupational Diseases / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology*; D016273:Occupational Exposure / Q000517:prevention & control; D013019:South Africa