Putra FRSP, Prihatiningsih D, Cahyani AAAE. Smoking habits and hemoglobin levels: Implications for donor screening among male blood donors. Med. Lab. Sci. J. 2025;1(1):15-19. Accessed August 4, 2026. https://journal.kadewaguru.org/index.php/MedLab/article/view/25