TY  - GEN
AU  - El-Galley,R
AU  - Rutland,H
AU  - Talic,R
AU  - Keane,T
AU  - Clark,H
TI  - Long-term efficacy of sildenafil and tachyphylaxis effect
SN  - 0022-5347
PY  - 2001///1004
KW  - Adult
KW  - Aged
KW  - Data Collection
KW  - Erectile Dysfunction
KW  - drug therapy
KW  - Humans
KW  - Male
KW  - Middle Aged
KW  - Phosphodiesterase Inhibitors
KW  - therapeutic use
KW  - Piperazines
KW  - Purines
KW  - Sildenafil Citrate
KW  - Sulfones
KW  - Tachyphylaxis
KW  - Time Factors
N1  - Publication Type: Journal Article
ER  -