%0 Journal Article %T Blood lead levels in relation to smoking and chronic obstructive pulmonary disease (COPD): a study from Korean National Health and Nutrition Examination Survey (KNHANES) %A Bumhee Park %A Chul Min Ahn %A Eun Mi Chun %A Eunyoung Lee %A Hyoung Kyu Yoon %A Jae Bum Park %A Jae Yeol Kim %A Ji Eun Park %A Joo Hun Park %A Korean Smoking Cessation Study Group %A Kwang Ha Yoo %A Kwang Joo Park %A Sang Haak Lee %A Seung Soo Sheen %A Song Vogue Ahn %A Sung Chul Hwang %A Woo Young Chung %A Young Sik Park %J SCIE-indexed Journal %D 2020 %R 10.21037/jtd-20-739 %X Although lead concentrations in the general population have declined over the past two decades, lead exposure is a resurgent environmental issue globally (1-3) %U http://jtd.amegroups.com/article/view/39923/html