The reliability and validity of a non-wearable indoor positioning system to assess mobility in older adults: A cross-sectional study - Isabel B. Rodrigues; Patricia Hewston; Jonathan Adachi; Sayem Borhan; George Ioannidis; Alexa Kouroukis; Carolyn Leckie; Andrea Lee; Alexander Rabinovich; Parthipan Siva; Rachel Swance; Suleman Tariq; et al. (PLoS ONE, 2025)