Which of the following is the best sequence for establishing a pain treatment plan of care?
a. Establish the cause and type of the pain, initiate non-pharmacological and/or non-opioid therapies, regularly reassess
b. Identify the pain generator through a complete history and physical examination, initiate opioid therapy, regularly reassess
c. Obtain imaging, initiate non-pharmacological and/or non-opioid therapies, refer to pain management
d. Validate the patient's pain complaint, obtain imaging, initiate opioid therapy, follow-up regularly