Butar, Y. B., Y. Hernaningsih, and N. M. . Yusoff. “The Role of Thromboelastography in Heparin Therapy for COVID-19 Patients”. Jurnal Respirasi, vol. 8, no. 2, May 2022, pp. 119-25, doi:10.20473/jr.v8-I.2.2022.119-125.