Verapamil (versus unexposed)

Study	Reference
Medveczky, 2004	Medveczky The use of drugs in mothers of offspring with neural-tube defects. Pharmacoepidemiol Drug Saf 2004; 13:443-55
Weber-Schoendorfer, 2008	Weber-Schoendorfer C The safety of calcium channel blockers during pregnancy: a prospective, multicenter, observational study. Reprod Toxicol 2008;26:24-30