Ventilatory function in males in a Witwatersrand town: comparison between smokers and non-smokers Authors: Sluis-Cremer GK, Sichel HS. Source: American review of respiratory diseases. 1968; 98:229-239. Babalwa Jekwa2019-04-10T23:42:32+02:00Dec 31st, 1968| Share This Page, Choose Your Platform! FacebookTwitterLinkedInWhatsappEmail