Correlation of Loaded and Unloaded Foot Area With Arch Index in Younger FlatfootDwi Basuki Wibowo, Gunawan Dwi Haryadi, Achmad Widodo and Sri Puji RahayuMATEC Web Conf., 135 (2017) 00060DOI: https://doi.org/10.1051/matecconf/201713500060