S. Wahyuni, S. M. T. Chalid, N. U. Pelupessy, S. Arifuddin, I. Idris, and A. N. Usman, “Comparison of the use of shock index and modified early obstetric warning score in COVID-19 obstetric emergency patients as ICU care parameters”, ijhms, vol. 5, no. 1, pp. 80-90, Jan. 2022.