TY  - RPRT
TI  - Sperm-counts after vasectomy.
AU  - J M Boyce
PY  - 1973
DO  - 10.1016/s0140-6736(73)91927-2
UR  - https://pubmed.ncbi.nlm.nih.gov/4120411/
ID  - 4120411
ER  -