Tambunan, Justinus, Stephanie Aryanti, and Dana Hatuaon Op. Sunggu. 2019. “A CT-Scan Thorax Lung Tumor on Suspicion of Columbia Asia Hospital Medan: A CT-Scan Thorax Lung Tumor on Suspicion of Columbia Asia Hospital Medan”. Journal of Midwifery and Nursing 2 (1):63-70. https://iocscience.org/ejournal/index.php/JMN/article/view/405.