Mishra, R., Sharma, K., Mandal, T., Panthakey, H. and Mehta, H. 2019. Emergency open cholecystectomy in a patient with severe aortic stenosis under epidural anaesthesia. International Journal of Research in Medical Sciences. 7, 8 (Jul. 2019), 3168–3171. DOI:https://doi.org/10.18203/2320-6012.ijrms20193111.