Nartha, Komang Pranayoga Prandhana Putra, et al. “Factors Related to Outcome and Length of Hospital Stay for Elderly Patients With COVID-19 at Mataram University Hospital in 2020-2021 ”. Jurnal Biologi Tropis, vol. 22, no. 4, Nov. 2022, pp. 1115-21, doi:10.29303/jbt.v22i4.4136.