Mutaqin ZZ, Lidya N, Astuti I, Meilani N. Evaluating the Efficacy of the Zelisken Ball in Shortening the First Stage of Labor: A Quasi-Experimental Study . j. info kesehat. [Internet]. 2023 Dec. 31 [cited 2024 Nov. 23];21(4):736-48. Available from: https://jurnal.poltekkeskupang.ac.id/index.php/infokes/article/view/1419