Eli, Khadijah Nasution S, Santosa H. INFLUENCE OF HEALTH SERVICES AND CHARACTERISTICS ON THE UTILIZATION OF POSTPARTUM FAMILY PLANNING IN SERDANG BEDAGAI DISTRICT. ijhes [Internet]. 2024Jul.31 [cited 2026Oct.7];7(8):21-0. Available from: https://www.ijhes.com/index.php/ijhes/article/view/341