Sri Utami Subagio, Nurseha, Marthia Ikhlasiah. Article RETRACTED due to malpractice  Effect of a Physical Activity-Based Intervention Package on Labor Pain: A Randomized Controlled Trial. Retos [Internet]. 2026 Jun. 2 [cited 2026 Jul. 28];82. Available from: https://revistaretos.org/index.php/retos/article/view/119477