Okai, D., Askey‐Jones, S., Mack, J., Martin, A., Chaudhuri, K. R., Samuel, M., . . . Brown, R. G. (2016). Parkinson's Impulse‐Control Scale for the Severity Rating of Impulse‐Control Behaviors in Parkinson's Disease: A Semistructured Clinical Assessment Tool. Mov Disord Clin Pract.

Okai, David, Sally Askey‐Jones, Joel Mack, Anne Martin, Kallol Ray Chaudhuri, Michael Samuel, Anthony S. David, i Richard G. Brown. "Parkinson's Impulse‐Control Scale for the Severity Rating of Impulse‐Control Behaviors in Parkinson's Disease: A Semistructured Clinical Assessment Tool." Mov Disord Clin Pract 2016.

Okai, David, et al. "Parkinson's Impulse‐Control Scale for the Severity Rating of Impulse‐Control Behaviors in Parkinson's Disease: A Semistructured Clinical Assessment Tool." Mov Disord Clin Pract 2016.