3.4. Ethical Principles
The aim of the study was verbally explained to the potential participants who met the inclusion criteria. The participants were told that all information (such as name, address, percentage of injury, etc.) would be kept secret and anonymous. The participants were told that they could withdraw from the study at any time. The required permissions were obtained from the vice-chancellor of research, Bushehr University of Medical Sciences, department of education in Bushehr city, and department of veterans’ affairs. Furthermore, the study was approved by the university ethics committee with ethics number 20.71.208.