Flowchart over recruitment to the study. The study population includes all registered pregnant women during the recruitment time n = 8194 at the 17 attending ANCs. Of those, 687 women did not fulfill the inclusions criteria for age or sufficient reading and writing skills in Swedish or English leaving 7507 women as eligible participants. External drop-out constitutes of women not invited to take part in the study or those who refused participation leaving 1940 participants. One of those did not fulfill the inclusion criteria for age (≥18 years) and was therefore excluded.