| UPA | Ulipristal acetate |
| SPRM | Selective progesterone receptor modulator |
| PAECs | Progesterone receptor modulator-associated endometrial changes |
| PI | Pulsatility index |
| RI | Resistance index |
| ECM | Extracellular matrix |
| GnRHa | Gonadotropin-releasing hormone agonists |
| PRAC | Pharmacovigilance Risk Assessment Committee |
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