| Copyright©2021: |
| Dadan Erwandi, Abdul Kadir, Fatma Lestari |
| Occupational Health and Safety Department, Faculty of Public Health, Universitas Indonesia, Depok West Java 16424, Indonesia; dadan@ui.ac.id (D.E.), abdul_kadir@ui.ac.id (A.K.), fatma@ui.ac.id (F.L.) |
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