Azmi Zulfa Hidayati & Gontar Alamsyah Siregar. “ASSOCIATION BETWEEN HYPOXIC INDUCIBLE FACTOR (HIF) -1 ALPHA WITH HISTOPATHOLOGICAL FEATURES OF GASTRITIS”. International Journal of Research Science and Management, vol. 7, no. 2, Feb. 2020, pp. 24-29, http://ijrsm.com/index.php/journal-ijrsm/article/view/90.