Haque, P., Sadia Rizwan, I. Ahmed, T. Khan, H. Tabassum, and S. Hussain. “Impact of COVID-19 Lockdown on Patients Undergoing Orthodontic Treatment: A Survey Based Study”. Journal of Liaquat University of Medical & Health Sciences, vol. 22, no. 03, Sept. 2023, pp. 206-10, http://ojs.lumhs.edu.pk/index.php/jlumhs/article/view/1055.