1. Effectiveness of intrauterine insemination in subfertile couples with an isolated cervical factor: a randomized clinical trial 
Pieternel Steures, M.D., Jan Willem van der Steeg, M.D., Peter G.A. Hompes, M.D., Ph.D., Patrick M.M. Bossuyt, Ph.D., J. Dik F. Habbema, Ph.D., Marinus J.C. Eijkemans, Ph.D., Willem A. Schöls, M.D., Jan M. Burggraaff, M.D., Fulco van der Veen, M.D., Ph.D., Ben W.J. Mol, M.D., Ph.D. 
Fertility and Sterility 
Volume 88, Issue 6, Pages (December 2007)
DOI: /j.fertnstert
Copyright © 2007 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Flowchart of trial population, with inclusion and outcome. Ong = ongoing; EP = ectopic pregnancy; IUI= intrauterine insemination.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2007 American Society for Reproductive Medicine Terms and Conditions