TY  - GEN
AU  - Lewis,S E
TI  - Is male infertility on the increase?
SN  - 0041-6193
PY  - 1998///0310
KW  - Humans
KW  - Infertility, Male
KW  - epidemiology
KW  - Male
KW  - United Kingdom
KW  - United States
N1  - Publication Type: Editorial
ER  -