M, F. ., D. . K.R., I. . A.A., . I. . A., and . A. Z. . A.A. “Oral Doxycycline on the Level of Matrix Metalloproteinase 9 in Rat Models Experiencing Traumatic Brain Injury”. IIUM Medical Journal Malaysia, vol. 20, no. 1, Jan. 2021, doi:10.31436/imjm.v20i1.1773.