Tarigan, Amira P., Ruby Firdaus, Pandiaman Pandia, Andika Pradana, Muntasir Abdullah, Sudirman P. Sinaga, Wahyu Wijanarko, Bibit Triwahyudi, Yeni Vera, Maryaningsih Maryaningsih, Putri C. Eyanoer, and Aditya S. Listyoko. “Effectiveness of Upper Arm and Breathing Exercises to Improve Inflammatory Markers in Severe COVID-19 Patients”. Narra J 4, no. 1 (January 1, 2024): e417. Accessed September 17, 2025. https://www.narraj.org/main/article/view/417.