Objectives: To investigate the associations between heavy metal exposure and serum ferritin levels, physical measurements, and type 2 diabetes mellitus (DM). Design: A retrospective cohort study. Setting: Changwon, the location of this study, is a Korean representative industrial city. Data were obtained from medical check-ups between 2002 and 2018. Participants: A total of 34,814 male subjects were included. Of them, 1,035 subjects with lead exposure, 200 subjects with cadmium exposure, and the 33,579 remaining were...

Background: Education on inhaler technique is critical for effective asthma treatment. However, traditionally used face-to-face education is a time-consuming, costly, and often laborious. The current study evaluated the efficacy of a newly developed video-based inhaler technique education method. Methods: A total of 184 subjects with well-controlled or partly-controlled asthma were enrolled from 12 hospitals in South Korea from 30 November 2015 to 01 June 2016. Subjects were randomly divided into two groups in a 1:1...