1. Division of Nursing Science Faculty of Nursing Chiang Mai University Chiang Mai Thailand
2. Epidemiology Research Center of Infectious Disease (ERCID) Chiang Mai University Chiang Mai Thailand
3. Department of Surgery Faculty of Medicine Chiang Mai University Chiang Mai Thailand
4. Infection Control Unit Maharaj Nakorn Chiang Mai Hospital Chiang Mai University Chiang Mai Thailand
5. Surgical Critical Care Unit Maharaj Nakorn Chiang Mai Hospital Chiang Mai University Chiang Mai Thailand
6. Surgical Intensive Care Unit Maharaj Nakorn Chiang Mai Hospital Chiang Mai University Chiang Mai Thailand
7. Division of Infectious Diseases Thammasart University Hospital Pratumthani Thailand