Upload a research article on, The description of the theory of pain: A balance between analgesia and side effects and discuss it . Please, as part of this assignment, include the main article of the discussion as an attachment in a PDF format as this article will need to be upload as part of the assignment. Please, use reference within the past 5 years, if possible, from the United States. Good, M. (2004). Pain: A balance between analgesia and side effects. Middle range theories: Application to nursing research, 59-77.