Arshad, Faiqa, et al. “Emergence of Vancomycin Intermediate Staphylococcus Aureus (VISA) in a Tertiary Care Hospital in Lahore: An Alarming Situation”. International Journal of Pathology, Nov. 2018, pp. 89-94, https://jpathology.com.65-21-161-183.cpanel.site/index.php/OJS/article/view/195.