Author/Authors :
H Fisch، نويسنده , , ET Goluboff، نويسنده , , JH Olson، نويسنده , , J Feldshuh، نويسنده , , SJ Broder، نويسنده , , DH Barad، نويسنده ,
Abstract :
Synopsis: The objective of this study was to determine whether semen quality has changed in the United States over the last 25 years. A retrospective review of 1,283 men was conducted using data from three sperm banks (1970-1994). Controlling for the eff
