Muhammad Rizqi Tri Nafi’an, Imtiyaz Hafizah Zahra, Danindra Ario Wiryawan, and Qonita Jayanti Wijayatno, “The Effect of Nitrate Supplementation on Oxygen Saturation Level as Acute Mountain Sickness Prevention: A Systematic Review and Meta-Analysis”, J Asian Med Stud Assoc, Jan. 2023.