TY  - RPRT
TI  - Persistent fertility after vasectomy.
AU  - A Halim
AU  - J Blandy
PY  - 1973
DO  - 10.1136/bmj.3.5871.110-a
UR  - https://pubmed.ncbi.nlm.nih.gov/4717838/
ID  - 4717838
ER  -