Adjie, JM Seno, and AA Rai D Maharani. 2018. “Relationship Between Physical Activity of Pregnant Women in the Third Trimester of Pregnancy With Preterm Birth Using Kaiser Physical Activity Survey (KPAS) Questionnaire: Hubungan Antara Aktivitas Fisik Perempuan Hamil Pada Trimester Ketiga Kehamilan Dengan Persalinan Prematur Menggunakan Kuesioner Kaiser Physical Activity Survey (KPAS)”. Indonesian Journal of Obstetrics and Gynecology 6 (4):203-8. https://doi.org/10.32771/inajog.v6i4.841.