Table 2 Inclusion and exclusion criteria

Inclusion criteria

 • Pregnant women 18–50 years of age

 • Pregnant women at 12-28 weeks of gestation between 1 January 2017 and 31 December 2018.

 • Willingness of the mother to give birth in a participating hospital

 • Willingness to participate in the study

Exclusion criteria

 • Pregnant women unwilling to participate in the study

 • Pregnant women planning to prematurely terminate the pregnancy