Sembiring M, Iskandar I, Syarifuddin A, Saing B. Denver Developmental Screening Test in two-year old infants delivered by vacuum extraction. PI [Internet]. 2017Feb.8 [cited 2025Apr.19];41(1-2):27-32. Available from: https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/1262