1. Evaluating the efficacy of the Valsalva maneuver on venous cannulation pain: A prospective, randomized study;Agarwal;Anesthesia and Analgesia,2005
2. The assessment and management of acute pain in infants, children, and adolescents;American Academy of Pediatrics, Committee on Psychosocial Aspects of Child, Family Health, Task Force on Pain in Infants, Children, and Adolescents;Pediatrics,2001
3. Interactions between the cardiovascular and pain regulatory systems: An updated review of mechanisms and possible alterations in chronic pain;Bruehl;Neuroscience and Biobehavioral Reviews,2004
4. Pain and distress in children undergoing blood sampling: Effectiveness of distraction with soap bubbles. A randomized controlled study;Caprilli;Giornale Italiano di Scienze Infermieristiche Pediatriche,2012