Harun Andreas, Zuhrial Zubir, Dairion Gatot, Alwi Thamrin & Armon Rahimi, “THE LEVELS OF FERRITIN SERUM AS A BIOMARKER TO DISTINGUISH BETWEEN ACTIVE AND INACTIVE SYSTEMIC LUPUS ERYTHEMATOSUS”, IJRSM, vol. 7, no. 7, pp. 27–32, Jul. 2020.