dx.doi.org/10.1002/14651858.CD008128, hdl.handle.net/1765/26901
Cochrane Database of Systematic Reviews
Erasmus MC: University Medical Center Rotterdam

Henriquez, D.D.C.A, Roos-Hesselink, J.W, Schalij, M.J, Klautz, R.J.M, Helmerhorst, F.M, & de Groot, C.J.M. (2009). Treatment of valvular heart disease during pregnancy for improving maternal and neonatal outcome. Cochrane Database of Systematic Reviews. doi:10.1002/14651858.CD008128