Rizkiyah, Umi, M. Riza Setiawan, and Bintang Tatius N. 2024. “Analysis of Biological Exposure Duration and Worker Characteristics on The Incidence of Covid-19 in Hospitals”. Nusantara Science and Technology Proceedings 2024 (44): 33-38. https://doi.org/10.11594/nstp.2024.4406.