Widerström-Noga EG, Cruz-Almeida Y, Martinez-Arizala A,& Turk DC. Internal consistency, stability, and validity of the spinal cord injury version of the multidimensional pain inventory. Arch Phys Med Rehabil. 2006; 87(4), 516–523.
Widerström-Noga EG, Duncan R, Felipe-Cuervo E,& Turk DC. Assessment of the impact of pain and impairments associated with spinal cord injuries. Arch Phys Med Rehabil. 2002; 83(3), 395–404.