1. Maternal drug use in early pregnancy and infant cardiovascular defect;Källén;Reprod Toxicol,2003
2. Maternal use of selective serotonin reuptake inhibitors and risk of adverse pregnancy outcome;Wogelius;Pharmacoepidem Drug Safety,2005
3. National Board of Health and Welfare. Centre for Epidemiology. The Swedish Medical Birth Register—a summary of content and quality. Available at: http://www.sos.se/FULLTEXT/112/2003-112-3/2003-112-3.pdf.
4. Monitoring of maternal drug use and infant congenital malformations, Does loratadine cause hypospadias?;Källén;Int J Risk Safety Med,2001
5. National Board of Health and Welfare. Centre for Epidemiology. Registration of congenital malformations in the Swedish health registers. Available at: http://www.socialstyrelsen.se/Pulicerat/2004/5120/2004-112-1.htm.