| Study | Country Study period | Population source | Exposure definition | Non-exposure definition | Sample size | Rmk | 
|---|---|---|---|---|---|---|
| Weber-Schoendorfer, 2008 | Finland, France, Germany, Israel, Italy, the Netherlands. 1986 - 2003 | Pregnant women who or whose physician contacted a Teratology Information Service (TIS) in regard to exposure to chemicals or drugs during pregnancy. | Pregnant women with first- trimester exposure to Diltiazem. | unexposed (general population or NOS) Pregnant women who had been counseled during pregnancy about exposures known to be non-teratogenic. | 41 / 806 | 
| Study | Country Study period | Case | Control | Sample size | Rmk | 
|---|