Griffin, X. L., Achten, J., Sones, W., Cook, J., & Costa, M. L. (2018). Randomised controlled trial of the sliding hip screw versus X-Bolt Dynamic Hip Plating System for the fixation of trochanteric fractures of the hip in adults: A protocol study for WHiTE 4 (WHiTE4). BMJ Open.

Griffin, Xavier L., Juul Achten, William Sones, Jonathan Cook, và Matthew L. Costa. "Randomised Controlled Trial of the Sliding Hip Screw Versus X-Bolt Dynamic Hip Plating System for the Fixation of Trochanteric Fractures of the Hip in Adults: A Protocol Study for WHiTE 4 (WHiTE4)." BMJ Open 2018.

Griffin, Xavier L., et al. "Randomised Controlled Trial of the Sliding Hip Screw Versus X-Bolt Dynamic Hip Plating System for the Fixation of Trochanteric Fractures of the Hip in Adults: A Protocol Study for WHiTE 4 (WHiTE4)." BMJ Open 2018.