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Fig. 2 | BMC Women's Health

Fig. 2

From: Histological diagnostic criterion for chronic endometritis based on the clinical outcome

Fig. 2

a Flow of patient registration and exclusion. The subjects were patients under 41 years of age who agreed and underwent the in vitro fertilization-embryo transfer (IVF-ET) protocol of our department, which includes routine hysteroscopy and local endometrial curettage (injury) before first frozen thawed embryo transfer. Patients who had a history of RIF, recurrent pregnancy loss (RPL) or diseases suspected to cause implantation failure such as submucosal myoma, adenomyosis, uterine malformation, or endometrial thinning (< 8 mm at implantation phase) were not enrolled. Genetic disorders, endocrine diseases and autoimmune diseases were not enrolled either. The presence of endometrial macropolyps and uterine malformations were evaluated by hysteroscopy, and patients with these diseases were excluded from this study at that moment. Before blastocyst transfer, patients were discussed with doctors again with respect to the treatment options, based on the result of existence of plasma cell in the stroma of the endometrium, and when the patient wanted to add the treatment which might modify the endometrial receptivity such as administration of antibiotics, or stimulated endometrium embryo transfer, the patients were excluded from the study. The patients who want to treat two-embryo transfer were also excluded to limit the study of treatment outcomes for single blastocyst transfer. b The numbers of patients registered and excluded. Sixty-nine patients were recruited, and 16 patients were excluded. Fifty-seven patients were finally analyzed

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