Suhendra, H., F. . Syarani, S. . Bihar, and P. C. . Eyanoer. “CT Guided TTNA and Core Biopsy in Suspected Lung Cancer, Review of Cases in Adam Malik General Hospital, Medan”. Respiratory Science, vol. 2, no. 1, Oct. 2021, pp. 18-27, doi:10.36497/respirsci.v2i1.27.