1. Recruitment challenges of a multicenter randomized controlled varicocelectomy trial 
J.C. Trussell, M.D., Gregory M. Christman, M.D., Dana A. Ohl, M.D., Richard S. Legro, M.D., Stephen A. Krawetz, Ph.D., Peter J. Snyder, M.D., Pasquale Patrizio, M.D., M.B.E., Alex J. Polotsky, M.D., Michael P. Diamond, M.D., Peter R. Casson, M.D., Christos Coutifaris, M.D., Ph.D., Kurt Barnhart, M.D., M.S.C.E., Robert G. Brzyski, M.D., Ph.D., William D. Schlaff, M.D., Randall Meacham, M.D., David Shin, M.D., Tracey Thomas, M.P.H., Meizhuo Zhang, Ph.D., Nanette Santoro, M.D., Esther Eisenberg, M.D., M.P.H., Heping Zhang, Ph.D. 
Fertility and Sterility 
Volume 96, Issue 6, Pages (December 2011)
DOI: /j.fertnstert
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2. Figure 1 Varicocelectomy flow chart.
Fertility and Sterility  , DOI: ( /j.fertnstert )
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3. Figure 2 Reproductive Medicine Network recruitment flowchart.
Fertility and Sterility  , DOI: ( /j.fertnstert )
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