H. Al-Salamy, H. tran. 2025. Exhaled Breath Condensate as a Non-Invasive Biomarker of Oxidative Stress in Smokers: A Cross-Sectional Case–Control Study: Oxidative Stress . Journal of Progressive Medical Sciences. 1, 3 (Nov. 2025). DOI:https://doi.org/10.63939/vfzgj933.