Khandpur, Jaspreet Singh, Sushama Dugad, Ravindra Shinde, Nikhil Raj, Kappagantu Surya Chaitanya Neeladrirao Subbarao, and Juhi Kadukar. “Study of Insomnia in Chronic Obstructive Pulmonary Disease Patients at a Tertiary Care Centre”. MVP Journal of Medical Sciences (April 12, 2022): 258–266. Accessed August 15, 2022. https://mvpjms.org/index.php/mvpjms/article/view/316.