1. Peripheral natural killer cell activity as a predictor of recurrent pregnancy loss: a large cohort study 
Kinue Katano, M.D., Sadao Suzuki, M.D., Yasuhiko Ozaki, M.D., Nobuhiro Suzumori, M.D., Tamao Kitaori, M.D., Mayumi Sugiura- Ogasawara, M.D. 
Fertility and Sterility 
Volume 100, Issue 6, Pages (December 2013)
DOI: /j.fertnstert
Copyright © 2013 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
A total of 552 patients were analyzed in the present study. Of the 1,127 women initially enrolled, 180 patients with identifiable causes, 323 patients who received any kind of medication, and 72 patients whose pregnancy outcomes were biochemical or ectopic pregnancy were excluded.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2013 American Society for Reproductive Medicine Terms and Conditions