Embryo transfer: techniques and variables affecting success William B Schoolcraft, M.D., Eric S Surrey, M.D., David K Gardner  Fertility and Sterility  Volume 76, Issue 5, Pages 863-870 (November 2001) DOI: 10.1016/S0015-0282(01)02731-5

Figure 1 Computerized assessment of uterine contraction (UC) frequency. After determining the uterine section to be analyzed (left), time-dependent changes in endomyometrial interfaces corresponding to UC were assessed (right). Reproduced from reference (23), with permission of the European Society of Human Reproduction and Embryology and of Oxford University Press/Human Reproduction. (Reproduced with permission from Oxford University Press.) Schoolcraft. Embryo transfer. Fertil Steril 2001. Fertility and Sterility 2001 76, 863-870DOI: (10.1016/S0015-0282(01)02731-5)

Figure 2 Clinical pregnancy rates in patients with uterine contractions (UC). A stepwise decrease in pregnancy rates from the lowest to the highest frequency groups is evident (P<.001, analysis of variance). Reproduced from reference (23), with permission of the European Society of Human Reproduction and Embryology and of Oxford University Press/Human Reproduction. (Reproduced with permission from Oxford University Press.) Schoolcraft. Embryo transfer. Fertil Steril 2001. Fertility and Sterility 2001 76, 863-870DOI: (10.1016/S0015-0282(01)02731-5)