Hendar Sunandar Department of Occupational Health and Safety, Faculty of Public Health, Universitas Indonesia, Depok, Indonesia
Department of Health, Safety, Security and Environment, PT. Pertamina Hulu Mahakam, Balikpapan, Indonesia Indonesia
Doni Hikmat Ramdhan Department of Occupational Health and Safety, Faculty of Public Health, Universitas Indonesia, Depok, Indonesia Indonesia