So Ryong Lee

Secondhand Smoke Exposure and Urine Cotinine Concentrations by Occupation among Korean Workers: Results from the 2008 Korea National Survey for Environmental Pollutants in the Human Body

Kunhyung Kim, C. Lee, Byung-chul Son, 2014, Journal of occupational and environmental hygiene.

Second-hand Smoke Exposure and Urine Cotinine Levels by Occupation in the Busan, Ulsan, Kyeongnam Provinces

D. Kim, C. Lee, Byung-chul Son, 2011 .