Nawir, Dian Amaliah. “Methodological Biases in Adult-Acquired Flatfoot Deformity Research: A Systematic Analysis of Study Design Limitations”. Physiotherapy, Exercise, and Rehabilitation Sciences Journal, vol. 1, no. 1, Jan. 2026, pp. 4-16, https://journal.unhas.ac.id/index.php/pers/article/view/49407.