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1 Relationship between Fatigue Severity and Heart Rate Variability in Middle-Aged Male Workers
Sang Wook Song, Jin Hee Shin, Thomas Findley
Korean J Occup Environ Med.2005;17(1):26-35.   Published online 2019 January 30     DOI: http://dx.doi.org/10.35371/kjoem.2005.17.1.26
   
2 A Study of Quality of Life in Middle-aged Men
Young Whee Lee
J Korean Acad Nurs.2002;32(4):539-549.   Published online 2017 March 29     DOI: http://dx.doi.org/10.4040/jkan.2002.32.4.539
      
3 Metabolic Syndrome Risk by Intake Ratio and Intake Pattern of Proteins in Middle-aged Men Based on the 2012–2013 Korean National Health and Nutrition Examination Survey Data
Minkyoung Jang, Eunsil Her, Kyunghea Lee
Korean J Community Nutr.2016;21(4):366-377.   Published online 2016 January 20     DOI: http://dx.doi.org/10.5720/kjcn.2016.21.4.366
   

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