M. A. Syifa, D. I. S. Siregar, and N. S. Arto, “Differences In Activated Partial Thromboplastin Time (APTT) & Prothrombin Time (PT) Methods Point-of-Care Testing (POCT) and Electromechanic Semi Automatic”, IJGHR, vol. 8, no. 1, pp. 1–10, Sep. 2025.