“…Cancellation of operation on the intended day of surgery affects the efficiency of OR, reduces utilization of OR time and waste resources which incur a significant financial loss for the patient hospital and health care cost of a country at large [ [2] , [3] , [4] , [5] , [6] , [7] , [9] , [10] , [11] , [12] , [13] , [14] , [15] , [16] , [17] ].…”