s. Yashaswi Wankhede, Ms. Switi Jawade, Roshan Umate. “A Case Report on Management of Acute Cholecystitis in a Covid-19 Patient”. Drugs and Cell Therapies in Hematology, vol. 10, no. 1, July 2021, pp. 501-5, http://dcth.org/index.php/journal/article/view/132.