References

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Bergh, I., Jakobsson, E., & Sjostrom, B. (2008). Worst experiences of pain and conceptions of worst pain imaginable among nursing students. Journal Of Advanced Nursing, 61(5), 484-491.

Godfrey, H. (2005). Physiology of pain. Understanding pain, part 1: physiology of pain... first in a two-part series. British Journal Of Nursing (BJN), 14(16), 846-852.

Helms, J., & Barone, C. (2008). Physiology and treatment of pain. Critical Care Nurse, 28(6), 38.

McEwen, M.  &  Wills, E.  (2011).  Theoretical basis for nursing.  (3rd ed.).  China:  Wolters Kluwer/Lippincott Williams & Wilkins