Fig. 3From: Histological diagnostic criterion for chronic endometritis based on the clinical outcomeProtocol of single frozen-thawed blastocyst transfer with a hormone replacement cycle. Multiple estradiol patches are started on days 2–3 of menstruation and increased gradually. When the endometrial thickness reaches 8 or more mm, oral administration of dydrogesterone (DYD) is started. Single blastocyst transfer is done 6 days after DYD is startedBack to article page