1.
Additional file 1 of Measuring the invisible: perinatal health outcomes of unregistered women giving birth in Belgium, a population-based study
2.
Additional file 2 of Measuring the invisible: perinatal health outcomes of unregistered women giving birth in Belgium, a population-based study
Additional file 3 of Measuring the invisible: perinatal health outcomes of unregistered women giving birth in Belgium, a population-based study
Kobo Collect form survey recorded electronically.
Characteristics of study participants (N = 1994).
Risk factors of SARS-CoV-2.
Positive cases and symptoms during testing.