Kusmiwati Kusmiwati, Heny Puji Wahyuningsih, Gunarmi Gunarmi. Effectiveness (P4K) with the Si Dora Backpack Innovation (Save Pregnant Women Movement with Blood Donor Alert) in Anticipating Pregnancy Risks at the Mantup Lamongan Health Center. IJPH [Internet]. 2025 Jun. 11 [cited 2025 Jul. 5];2(2):43-52. Available from: https://international.arikesi.or.id/index.php/IJoPH/article/view/428