Cognitive Assessment in Middle And Elderly Aged Patients Undergoing Non-Cardiac Surgery Using Mini Mental Status Examination Score in Tertiary Care Hospital- A Prospective Observational Study. Journal title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) Authors: Japhereena Murugavel, Swarnalingam Thangavelu, Vasantharekha Ramasamy Subject(s):