Level IV Evidence — Adverse Anecdote and Clinical Practice
Stuebe, Alison M. M.D.
From the Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of North Carolina School of Medicine; and the Department of Maternal and Child Health, Gillings School of Global Public Health, University of North Carolina — both in Chapel Hill.
Disclosure forms provided by the author are available with the full text of this article at NEJM.org.
New England Journal of Medicine 365(1):p 8-9, July 7, 2011.