Hubungan antara aspek psikososial dengan kelelahan multidimensi akibat kerja pada pekerja migas Daerah Operasi Bagian Utara (DOBU) PT. XYZ di Kalimantan Timur selama pendemi COVID-19 tahun 2020-2021 = Associations of psychosocial aspect and multidimensional work-related fatigue amongst upstream oil and gas workers in the northern operations area (DOBU) PT. XYZ in East Kalimantan during the 2020-2021 COVID-19 pandemic