1. Abscess Incision and Drainage With or Without Ultrasonography: A Randomized Controlled Trial 
Romolo J. Gaspari, MD, PhD, Alexandra Sanseverino, MD, Timothy Gleeson, MD 
Annals of Emergency Medicine 
Volume 73, Issue 1, Pages 1-7 (January 2019)
DOI: /j.annemergmed
Copyright © 2018 American College of Emergency Physicians Terms and Conditions

2. Figure 1
Study flow diagram. I&D, Incision and drainage; OR, odds ratio; F/U, follow-up.
Annals of Emergency Medicine  , 1-7DOI: ( /j.annemergmed )
Copyright © 2018 American College of Emergency Physicians Terms and Conditions

3. Figure 2 Failure days after incision and drainage.
Annals of Emergency Medicine  , 1-7DOI: ( /j.annemergmed )
Copyright © 2018 American College of Emergency Physicians Terms and Conditions