Nugraha, D., N. Kloping, R. Yudhawati, A. Purwandhono, and H. Hidayati. “A Current Update in COVID-19 Associated Acute Respiratory Distress Syndrome: Focus on Mesenchymal Stem Cell Therapy”. Anaesthesia, Pain & Intensive Care, Vol. 24, no. 6, Apr. 2020, pp. 671-8, doi:10.35975/apic.v24i6.1404.