Comment on

• Postoperative pain assessment based on numeric ratings is not the same for patients and professionals: a cross-sectional study.

  van Dijk JF, van Wijck AJ, Kappen TH, Peelen LM, Kalkman CJ, Schuurmans MJ. van Dijk JF, et al. Int J Nurs Stud. 2012 Jan;49(1):65-71. doi: 10.1016/j.ijnurstu.2011.07.009. Epub 2011 Aug 15. Int J Nurs Stud. 2012. PMID: 21840522
• Postoperative pain assessment based on numeric ratings is not the same for patients and professionals: commentary on van Dijk et al. (2012).

  Yang Q, Liu X, Zhang Y, Cao B. Yang Q, et al. Int J Nurs Stud. 2013 Jan;50(1):134-5. doi: 10.1016/j.ijnurstu.2012.05.005. Epub 2012 Jul 17. Int J Nurs Stud. 2013. PMID: 22810013 No abstract available.