Fadillah, Aulin Najwa, Christina Roosarjani, and Titis Wahyuono. “Effect of Hematocrit Level of Blood Donors on Duration of Blood Collection”. ARRAZI: Scientific Journal of Health 3, no. 3 (August 8, 2025). Accessed November 8, 2025. http://journal.csspublishing.com/index.php/arrazi/article/view/1145.