RT Journal Article SR Electronic T1 VASECTOMY FOLLOW-UP JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 64 OP 64 VO 26 IS 162 A1 C. H. Maycock YR 1976 UL http://bjgp.org/content/26/162/64.2.abstract AB