3.3 Data collection The data of patient's medical history and laboratory results will be recorded on pre-designed case report forms (CRFs) by study nurses. In all patients, age, gender, diagnosis, co-morbidities, length of hospital and intensive care unit (ICU) stay, Injury Severity Score (ISS) score, numerical rating scale (NRS) and outcomes, will be recorded. In addition, all microorganisms isolated and antibiotic substances applied will be documented.