“Methodological Biases in Adult-Acquired Flatfoot Deformity Research: A Systematic Analysis of Study Design Limitations” (2026) Physiotherapy, Exercise, and Rehabilitation Sciences Journal, 1(1), pp. 4–16. Available at: https://journal-598.unhas.ac.id/index.php/pers/article/view/49407 (Accessed: 1 August 2026).