1. Singhal T (2020) A review of coronavirus disease-2019 (COVID-19). Indian J Pediatr 87(4):281–286
2. Brosnahan SB, Jonkman AH, Kugler MC, Munger JS, Kaufman DA (2020) COVID-19 and respiratory system disorders: current knowledge, future clinical and translational research questions. Arterioscler Thromb Vasc Biol 40(11):2586–2597
3. Sirisha A, Venkateswararao P (2020) Image processing techniques on radiological images of human lungs effected by COVID-19. JOIV Int J Inf Vis 4(2):69–72
4. Chikhalekar AT (2016) Analysis of image processing for digital X-ray. Int Res J Eng Technol (IRJET) 3(5):1364–1368
5. Rahman S, Rahman MM, Hussain K, Khaled SM, Shoyaib M (2014) Image enhancement in spatial domain: a comprehensive study. In: 17th international conference on computer and information technology (ICCIT). IEEE, Dhaka, pp 368–373