primigravida, singleton pregnancy, maternal age 18-35 years, and pregnancy duration 16-20 weeks at the time of study inclusion.

NCT03233880_inc_T1
Condition
primigravida
NCT03233880_inc_T2
Condition
singleton pregnancy
NCT03233880_inc_T3
Person
maternal age
NCT03233880_inc_T4
Value
18-35 years
NCT03233880_inc_T6
Measurement
pregnancy duration
NCT03233880_inc_T7
Value
16-20 weeks
NCT03233880_inc_T5
Temporal
at the time of study inclusion