Al-Ani, A. N., Neander, G., Samuelsson, B., Blomfeldt, R., Ekström, W., & Hedström, M. (2013). Risk factors for osteoporosis are common in young and middle-aged patients with femoral neck fractures regardless of trauma mechanism. Acta Orthopaedica, 84(1), 54–59. https://doi.org/10.3109/17453674.2013.765639