Comparison between Two-Layer Density Gradient and Three-Layer Density Gradient Technique for Sperm Preparation at Aster Fertility Clinic, Dr. Hasan Sadikin General Hospital. IJIHS [Internet]. 2014 Jul. 25 [cited 2026 Jul. 17];2(1):40-4. Available from: https://journal.fk.unpad.ac.id/index.php/ijihs/article/view/286