Original investigations into the clearance of spermatozoa after vasectomy
50 Years Ago Today
Volume 111, Issue 1, Page 60
Martin Kathrins, M.D.
“The urologist and patient, with the cooperation of the laboratory performing the sperm counts, can determine within a few days after operation that aspermia has been produced and that the procedure has been successful.”
—Freund M, Davis JE. Disappearance rate of spermatozoa from the ejaculate following vasectomy. Fertil Steril 1969;20:163–70.