Willhelmina Wahara. Covid 19 Prevention Education to Pregnant Mothers In The Sub-District of Medan Sunggal, Medan City in 2o22. IJCS [Internet]. 2022 Jun. 30 [cited 2024 May 5];1(1):66-71. Available from: https://ejournal.ipinternasional.com/index.php/ijcs/article/view/123