Acknowledgements
RCC
RCC
This study was extracted from the MSc thesis by Zahra Karimian. The authors would like to thank the orthopedic patients and the personnel of orthopedic wards, as well as the operation and recovery rooms. The authors would also like to thank Barij Essence Pharmaceutical Co. for preparing and assessing quality control of lemon inhalation essence. They would also like to appreciate Dr. Nasrin Shoukrpour at the Research Consultation Center (RCC) of Shiraz University of Medical Sciences for her invaluable assistance in editing the manuscript.