S. M. Patel, P. R. Jadhav, and A. Vieira, “Association of OSTA index with bone mineral density (BMD) and its comparison with calcaneal quantitative ultrasound for the prediction of low BMD in peri-menopausal Indian women”, Int J Res Med Sci, vol. 2, no. 4, pp. 1495–1499, Jan. 2017.