title: Reply by the authors.
authors.forename: Ehab
authors.initials: E
authors.lastname: ElGanainy
mesh_terms: D053713:Azoospermia / Q000000981:diagnostic imaging* / Q000209:etiology*; D019160:Endosonography / Q000379:methods*; D006801:Humans; D008297:Male; D018615:Ultrasonography, Doppler, Color / Q000379:methods*; D014646:Varicocele / Q000150:complications* / Q000000981:diagnostic imaging*