The Norwegian MoBa cohort MoBa is a population-based pregnancy cohort study conducted by the Norwegian Institute of Public Health. Participants were recruited from all over Norway from 1999 to 2008. The women consented to participation in 41% of the pregnancies (n = 112,908 recruited pregnancies)43,54. The cohort includes approximately 114,500 children, 95,200 mothers and 75,200 fathers. The