1. Postmarketing Safety-Related Modifications of Drugs Approved by the US Food and Drug Administration Between 1999 and 2014 Without Randomized Controlled Trials 
Daniel Shepshelovich, MD, Ariadna Tibau, MD, PhD, Hadar Goldvaser, MD, Alberto Ocana, MD, PhD, Bostjan Seruga, MD, PhD, Eitan Amir, MD, PhD 
Mayo Clinic Proceedings 
Volume 94, Issue 1, Pages (January 2019)
DOI: /j.mayocp
Copyright © 2018 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Figure Flowchart of included drugs.
Mayo Clinic Proceedings  , 74-83DOI: ( /j.mayocp )
Copyright © 2018 Mayo Foundation for Medical Education and Research Terms and Conditions