P. P. Sinurat, H. Sjahrir, A. S. Rambe, and R. A. Ganie, “The Alteration of Plasma Matrix Metalloproteinase-9 Level after the Addition of Bromelin 500 mg to Standard Therapy of Acute Ischemic Stroke and Its Correlation with Outcome”, Open Access Maced J Med Sci, vol. 6, no. 4, pp. 624–628, Apr. 2018.