Tarar, J. M., Nadeem, K. ., Khan, D. S., & Iqbal, M. S. . (2020). Transition from Multi-portal to Uni-portal Video Assisted Thoracoscopic Surgery: A Modern Era Requirement. Annals of Punjab Medical College, 14(4), 357–360. https://doi.org/10.29054/apmc/2020.999