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The code of ethics was IR.SSU.SPH.REC.1394.66. Before the study, an informed consent was received from the participants. Details and aims of the study were explained to all participants.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}},{"value":"The impossibility of conducting the experiment and its evaluation for all employees working on the loading platforms of petroleum products, applying other methods for comparing the total antioxidant capacity, and impossible assessment and determination of benzene absorbed through the biological monitoring of worker due to lack of equipment, laboratory facilities, financial resources, and insufficient time are among the limitations of this study. Therefore, it is suggested to pay close attention to the aforementioned limitations in the future studies to obtain more complete results.","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Limitations"}}]}}