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Effects of high occupational physical activity, aging, and exercise on heart rate variability among male workers
Dongmug Kang, Youngki Kim, Jongeun Kim, Yongsik Hwang, Byungmann Cho, Taekjong Hong, Byungmok Sung, Yonghwan Lee
Ann Occup Environ Med.2015;27(1):22. Published online 2015 September 25
DOI: http://dx.doi.org/10.1186/s40557-015-0073-0
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