While steps are being taken to control outdoor air pollution, experts felt that little was being done to reduce the risk to millions inside their own homes.
अब, ८० से अधिक सालों बाद, यूनिवर्सिटी ऑफ़ जॉर्जिया के ऎडवर्ड लारसन ने लबा के विख्यात सर्वेक्षण को दोहराया है ।