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Table 1 Search strategy (Pubmed database)

From: Spiral artery blood flow during pregnancy: a systematic review and meta-analysis

For the electronic search of Cochrane Library and Embase we used a more broad search using a combination of terms ‘spiral artery’ AND ‘Doppler’ (no limits or filters)
Search (spiral artery) AND Doppler
Search Pubmed (no limits or filters)
1. Spiral artery [All Fields]
2. Spiral artery remodeling [All Fields]
3. Search 1 OR 2
4. Color Doppler ultrasonography [Mesh]
5. Doppler [All Fields]
6. Doppler sonography [All Fields]
7. Doppler velocimetry [All Fields]
8. Pulse wave Doppler [All Fields]
9. Search 4 OR 5 OR 6 OR 7 OR 8
10. Search 3 AND 9