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2. Korean Occupational Safety and Health Agency: 2012 Industrial Accidents Statistics. Ulsan, Korea; 2013.
3. European Agency for Safety and Health at Work: OSH figure: Work-Related Musculoskeletal Disorders in the EU-Facts and Figures. [ https://osha.europa.eu/en/publications/reports/TERO09009ENC ]
4. Centers for Disease Control and Prevention: Work-Related Musculoskeletal Disorders (WMSDs) Prevention. [ http://www.cdc.gov/workplacehealthpromotion/evaluation/topics/disorders.html ]