1. History and evolution of reproductive and developmental toxicology guidelines;Collins;Curr Pharmaceut Des,2006
2. Guidance for Industry 1994 www.fda.gov
3. Guidance for Industry 1997 www.fda.gov
4. Placental transfer of drugs administered to the mother;Pacifici;Clin Pharmacokinet Concepts,1995
5. Mechanisms of drug transfer across the placenta;Van der Aa;Pharm World Sci,1997