Wiffen, P. J., Cooper, T. E., Anderson, A., Gray, A. L., Grégoire, M., Ljungman, G., & Zernikow, B. (2017). Opioids for cancer‐related pain in children and adolescents. Cochrane Database Syst Rev.

Wiffen, Philip J., Tess E. Cooper, Anna‐Karenia Anderson, Andrew L. Gray, Marie‐Claude Grégoire, Gustaf Ljungman, و Boris Zernikow. "Opioids for Cancer‐related Pain in Children and Adolescents." Cochrane Database Syst Rev 2017.

Wiffen, Philip J., et al. "Opioids for Cancer‐related Pain in Children and Adolescents." Cochrane Database Syst Rev 2017.