Kalwar, Hamid Ali, and Lubna Kamani. “Problems Faced by Patients and Health Service Utilization Experiences of Gastrointestinal Patients During Lockdown Due to COVID-19 Pandemic”. Pakistan Journal of Medical Sciences 38, no. 3 (January 25, 2022). Accessed May 23, 2022. http://pjms.org.pk/index.php/pjms/article/view/4799.