1. Evaluation and Management of Penicillin Allergy
Thanai Pongdee, MD, James T. Li, MD, PhD 
Mayo Clinic Proceedings 
Volume 93, Issue 1, Pages (January 2018)
DOI: /j.mayocp
Copyright © 2017 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Figure
Chemical structures of penicillins and other β-lactam antibiotics.
Mayo Clinic Proceedings  , DOI: ( /j.mayocp )
Copyright © 2017 Mayo Foundation for Medical Education and Research Terms and Conditions