1. Twice-frozen embryos are no detriment to pregnancy success: a retrospective comparative study 
Juliette Koch, M.R.A.N.Z.C.O.G., Michael F. Costello, F.R.A.N.Z.C.O.G., Michael G. Chapman, F.R.A.N.Z.C.O.G., Suha Kilani, Ph.D. 
Fertility and Sterility 
Volume 96, Issue 1, Pages (July 2011)
DOI: /j.fertnstert
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1 Flow chart of the 94 women with 123 twice-frozen embryos.
Fertility and Sterility  , 58-62DOI: ( /j.fertnstert )
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2
Stage of embryos and outcome of transfer for once-frozen and twice-frozen embryo transfers. SET = single embryo transfer; DET = double embryo transfer.
Fertility and Sterility  , 58-62DOI: ( /j.fertnstert )
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions