Fig. 1From: The effect of maternal BMI, smoking and alcohol on congenital heart diseases: a Mendelian randomisation studyAn overview of included cohorts and selection of study participants. Abbreviations: ALSPAC, Avon Longitudinal Study of Parents and Children; BiB, Born in Bradford; MoBa, Norwegian Mother, Father and Child Cohort; QC, quality control; UKSeRP, the secure research platform containing CHD data for ALSPAC; CHD, congenital heart disease; QC, quality controlBack to article page