1. Goodman & Gilman's The Pharmacological Basis of Therapeutics;Hardman,2001
2. Use of over-the-counter medications during pregnancy;Werler;Am J Obstet Gynecol,2005
3. Drugs in pregnancy and lactation;Briggs,2002
4. Studies of drug-induced birth defects;Mitchell,2012
5. First-trimester drug use and congenital disorders;Aselton;Obstet Gynecol,1985