| ASRM | American Society of Reproductive Medicine |
| CGRP | Calcitonin gene-related peptide |
| HIT | Headache Impact Test |
| ICHD-3 | International Classification of Headache Disorders, 3rd edition |
| PRISMA | Preferred Reporting Items for Systematic Reviews and Meta-Analyses |
| UK | United Kingdom |
| USG | Ultrasonography |
| VAS | Visual analog scale |
| WHO | World Health Organization |
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