Three new datasets supporting use of the Numerical Rating Scale (NRS-11) for children's self-reports of pain intensity.
von Baeyer CL, Spagrud LJ, McCormick JC, Choo E, Neville K, Connelly MA. Three new datasets supporting use of the Numerical Rating Scale (NRS-11) for children's self-reports of pain intensity. Pain. 2009 Jun; 143(3):223-227.