S. Rahman, H. Subroto, B. J. Budiman, A. Asri, and H. Bachtiar, “Expression of epidermal growth factor receptor in advance stage nonkeratinizing nasopharyngeal carcinoma in West Sumatra, Indonesia”, Arch Oncol, vol. 24, no. 2, pp. 20–23, Aug. 2018, doi: 10.2298/AOO180401005R.