1. IASP sub-committee on taxonomy;Merskey;Pain,1979
2. Improving post-operative pain management;White;Anesthesiol,2010
3. Poorly controlled postoperative pain: prevalence, consequences, and prevention;Gan;J Pain Res,2017
4. Measurement in pain medicine;Bendinger;BJA Educ,2016
5. Assessment and management of acute pain in infants, children and adolescents;Pediatrics,2001