Wardhana, M. P., S. A. Wulandari, S. N. Rifdah, I. A. Wafa, A. Sulistyono, A. Aditiawarman, H. T. Joewono, and E. Gumilar. “Nine Maternal Mortalities in 2 Weeks of Second COVID-19 Surge in Indonesia: A Case Series from One Large Tertiary Center”. Open Access Macedonian Journal of Medical Sciences, vol. 10, no. B, Apr. 2022, pp. 1914-21, doi:10.3889/oamjms.2022.9415.