Maternal drug use in early pregnancy and infant cardiovascular defect
The purpose of the paper is to identify maternal drug use that may be associated with an increased risk for cardiac defects in the offspring. A case-control study was performed with cases (cardiovascular defects without known chromosome anomalies) being identified from three Swedish health registers (n = 5015) and controls being all infants born in Sweden during the period 1 July 1995-2001 (n = 57
