TY - JOUR T1 - Postvasectomy Semen Analysis JF - The Journal of the American Board of Family Practice JO - J Am Board Fam Med SP - 327 LP - 327 DO - 10.3122/jabfm.18.4.327 VL - 18 IS - 4 AU - K. Ramakrishnan Y1 - 2005/07/01 UR - http://www.jabfm.org/content/18/4/327.abstract N2 - ER -