Table 1

Inclusion and exclusion criteria for participants in the HAPPO study

Inclusion criteria

  • Minimum age of 18 years

  • Delivery date of last pregnancy more than 1 year ago

  • Previous pregnancy complicated by PPC or uncomplicated previous pregnancy

  • Current wish to become pregnant

Exclusion criteria

  • Unable or unwilling to provide informed consent

  • Currently breastfeeding

  • HAPPO, Hemodynamic Adaptation to Pregnancy and Placenta-related Outcome; PPC, placenta-related pregnancy complications.