Chronic airflow limitation in South African gold miners. (Letter) Authors: Hnizdo E, Hessel PA, Sluis-Cremer GK. Source: Am Rev Resp Dis. 1991; 148:1423. Babalwa Jekwa2019-04-03T15:06:47+02:00Dec 31st, 1991| Share This Page, Choose Your Platform! FacebookTwitterLinkedInWhatsappEmail