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Biological specimens collected in the 3D Cohort Study
| Recruitment (8–14 weeks) | Second trimester (20–24 weeks) | Third trimester (32–35 weeks) | Delivery/48 h postpartum | 2 years | |
|---|---|---|---|---|---|
| Mother | |||||
| Urine | X | X | X | ||
| Blood | X | X | X | X | |
| Vaginal secretions | X | X | |||
| Nails | X | ||||
| Hair | X | ||||
| Partner | |||||
| Urine | X | ||||
| Blood | X | ||||
| Child | |||||
| Cord blood | X | ||||
| Umbilical cord | X | ||||
| Placenta samples | X | ||||
| Meconium | X | ||||
| Hair | X | ||||
| Urine | X | ||||
| Blood | X | ||||
The 3‐month and 1‐year postnatal visits did not include biological specimens collection.
