1. Maternal-fetal medicine;Nader,2004
2. Hypothyroxinemia in premature infants: is thyroxine treatment necessary?;Fisher;Thyroid,1999
3. Free T4 immunoassays are flawed during pregnancy;Lee;Am J Obstet Gynecol,2009
4. ACOG Practice Bulletin. Clinical management guidelines for obstetrician-gynecologists. Number 37, August 2002 (replaces practice Bulletin Number 32, November 2001). Thyroid disease in pregnancy;American College of Obstetricians and Gynecologists, Committee on Practice Bulletins;Obstet Gynecol,2001
5. Subclinical thyroid disease;Surks;JAMA,2004