The Journal of King Mongkut's University of Technology North Bangkok
วารสารวิชาการพระจอมเกล้าพระนครเหนือ

Pimpa Buapim
<p>Department of Occupational Health and Safety, Faculty of Public Health, Thammasat University Rangsit Center, Pathum<br />Thani</p>
Thailand

Arroon Ketsakorn
<p>Department of Occupational Health and Safety, Faculty of Public Health, Thammasat University Rangsit Center, Pathum<br />Thani</p>
Thailand