Contents: Clinical Expert Series
Maternal-Fetal Medicine Associates, PLLC, and the Department of Obstetrics, Gynecology, and Reproductive Science, Icahn School of Medicine at Mount Sinai, New York, New York.
Corresponding author: Nathan S. Fox, MD, 70 East 90th Street, New York, NY 10128; email: [email protected].
Financial Disclosure The author did not report any potential conflicts of interest.
Continuing medical education for this article is available at https://links.lww.com/AOG/B71.
The author has indicated that he has met the journal's requirements for authorship.