Alishba Malik, Muhammad Arif, Naureen Ahmed Syed, Muhammad Kashif Bashir, Nasir Ali. “Epidemiology of Sleeping Disorders Among Doctors During COVID-19 Pandemic in Pakistan”. Pakistan Journal of Medical & Health Sciences, vol. 16, no. 04, May 2022, p. 592, doi:10.53350/pjmhs22164592.