RT Journal Article SR Electronic T1 Postvasectomy Semen Analysis–Reply–I JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 198 OP 198 DO 10.3122/jabfm.4.3.198b VO 4 IS 3 A1 Smucker, Douglas R. YR 1991 UL http://www.jabfm.org/content/4/3/198.2.abstract AB