1. A randomized controlled crossover trial: Lidocaine injected at a 90-degree angle causes less pain than lidocaine injected at a 45-degree angle 
Kathryn J. Martires, BA, Christi L. Malbasa, MD, Jeremy S. Bordeaux, MD, MPH 
Journal of the American Academy of Dermatology 
Volume 65, Issue 6, Pages (December 2011)
DOI: /j.jaad
Copyright © 2011 American Academy of Dermatology, Inc. Terms and Conditions

2. Fig 1
Pain assessment using 10-point Wong-Baker Faces scale. Median pain scores, along with interquartile ranges, are shown. Difference in medians between the 2 groups was statistically significant (P = .0002).
Journal of the American Academy of Dermatology  , DOI: ( /j.jaad )
Copyright © 2011 American Academy of Dermatology, Inc. Terms and Conditions