1. A retrospective analysis of ovarian stimulation with letrozole in women undergoing artificial insemination by donor 
X.J. Sun, L. Jiang, L.C. Ji, R. Nie, H. Chen, L. Jin, G.J. Zhu, K. Qian 
Reproductive BioMedicine Online 
Volume 34, Issue 4, Pages (April 2017)
DOI: /j.rbmo
Copyright © 2017 Reproductive Healthcare Ltd. Terms and Conditions

2. Figure 1
Follicle size on the day of HCG administration in letrozole treated cycles.
Reproductive BioMedicine Online  , DOI: ( /j.rbmo )
Copyright © 2017 Reproductive Healthcare Ltd. Terms and Conditions

3. Figure 2
Follicle size on the day of HCG administration in natural cycles.
Reproductive BioMedicine Online  , DOI: ( /j.rbmo )
Copyright © 2017 Reproductive Healthcare Ltd. Terms and Conditions

4. Figure 3
Clinical pregnancy rate according to leading follicle size in letrozole treated cycles with LH 10 mIU/ml or over and oestradiol levels less than 200 pg/ml on the day of HCG administration. The number of cycles for the three groups were 64, 124 and 105, respectively.
Reproductive BioMedicine Online  , DOI: ( /j.rbmo )
Copyright © 2017 Reproductive Healthcare Ltd. Terms and Conditions

5. Figure 4
Clinical pregnancy rate according to leading follicle size in letrozole treated cycles with LH 10 mIU/ml or over and oestradio ≤200 to <300 pg/ml on the day of HCG administration. The number of cycles for the three groups were 40, 59 and 75, respectively.
Reproductive BioMedicine Online  , DOI: ( /j.rbmo )
Copyright © 2017 Reproductive Healthcare Ltd. Terms and Conditions

6. Figure 5
Clinical pregnancy rate according to leading follicle size in letrozole treated cycles with LH ≥10 mIU/ml and oestradiol ≥300 pg/ml on the day of HCG administration. The number of cycles for the three groups were 25, 42 and 34, respectively.
Reproductive BioMedicine Online  , DOI: ( /j.rbmo )
Copyright © 2017 Reproductive Healthcare Ltd. Terms and Conditions

7. Figure 6
Clinical pregnancy rate according to leading follicle size in letrozole treated cycles with LH ≥10 mIU/ml on the day of HCG administration. The number of cycles for the three groups were 121, 233 and 214, respectively.
Reproductive BioMedicine Online  , DOI: ( /j.rbmo )
Copyright © 2017 Reproductive Healthcare Ltd. Terms and Conditions