File:Wong pain scale.jpg

The Wong pain scale, which shows varying faces. Used by medical doctors to assess a patient's pain. Retrieved 2006-07-14 from http://www.cancer.gov/cancertopics/youngpeople/page7. Attribution on that page reads, "From Wong, D.L., Hockenberry-Eaton, M., Wilson, D., Winkelstein, M.L., Ahmann, E., DiVito-Thomas, P.A.: Whaley and Wong's Nursing Care of Infants and Children, ed. 6, St. Louis, 1999, p. 2040. Copyrighted by Mosby, Inc. Reprinted by permission."

Fair use claimed to display the scale, which is discussed in the article.