RT Journal Article SR Electronic T1 Letter: Vasectomy. JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 442 OP 442 VO 25 IS 155 A1 L. N. Jackson YR 1975 UL http://bjgp.org/content/25/155/442.1.abstract AB