1. Management of the dry ejaculate: a systematic review of aspermia and retrograde ejaculation 
Akanksha Mehta, M.D., Mark Sigman, M.D. 
Fertility and Sterility 
Volume 104, Issue 5, Pages (November 2015)
DOI: /j.fertnstert
Copyright © 2015 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Overview of study selection for inclusion in the systematic review. NLM = National Library of Medicine.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2015 American Society for Reproductive Medicine Terms and Conditions