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Reviani, Nia and Poluan, Fransiskus Harf and Rantemangiling, Andrew Jeremiah and Elena, Elena and Sihaloho, Resilia and Ismail, Rafly Alif and Tambunan, Hidekel and Andriani, Ance (2026) Community Service through Health Education on Mumps and Hypertension. Asian Journal of Community Services (AJCS), 5 (9). pp. 783-790. ISSN 2962-1496
Simanjuntak, Tigor Peniel and Elena, Elena and Sirait, Batara I. (2025) Effectiveness of Aspirin Dose in Preventing Preeclampsia in High-Risk Group: A Meta-Analysis. Indonesian Journal of Obstetrics & Gynecology Science, 8 (2). pp. 398-407. ISSN 2615-496X
Elena, Elena (2023) Efektivitas Penggunaan Aspirin dan Asam Folat dalam Pencegahan Preeklampsia: Sebuah Tinjauan Sistematis dan Meta-Analisis. S1 thesis, Universitas Kristen Indonesia.