I Wayan Agus Putra, Teja Koswara, and Muhammad Alif Rafi. “Risk Factor for Covid-19 Patients on Ventilators at Gatot Soebroto Army Hospital”. ACTA Medical Health Sciences, vol. 2, no. 1, June 2023, pp. 29-37, http://amhs.unjani.ac.id/index.php/acta_medica/article/view/33.