It is unfortunate that there is not enough information on how the investigators should control body temperature in non-neurological critically ill patients, because fever is a very common physiological abnormality in this cohort. From the beginning, it would, therefore, be desirable to understand several aspects of fever and antipyretic therapy in ICU patients, as 1)How often fever occurs in our ICUs, 2)To what degree fever is independently associated with mortality?, 3)How often antipyretic therapy is prescribed?, 4)How effectively antipyretic can decrease temperature?, 5)How different is lowering temperature with medications compared with cooling?, 6)To what degree antipyretic is independently associated with mortality?