1. Basic science of pain;DeLeo;J. Bone Joint Surg. Am.,2006
2. Opioid complications and side effects;Benyamin;Pain Physician.,2008
3. Opioids and the immune system - friend or foe;Plein;Br. J. Pharmacol.,2017
4. The effect of opioid therapy on endocrine function;Brennan;Am. J. Med.,2013
5. Brain reward circuits in morphine addiction;Kim;Mol. Cell,2016