Random triples
| Subject | Object |
|---|---|
| gptkb:screening_for_Down's_syndrome | amniocentesis |
| gptkb:screening_for_Down's_syndrome | chorionic villus sampling |
| Subject | Object |
|---|---|
| gptkb:screening_for_Down's_syndrome | amniocentesis |
| gptkb:screening_for_Down's_syndrome | chorionic villus sampling |