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Current methods now permit the measurement of nocturnal penile tumescence and rigidity (NPTR) in men with erectile dysfunction. But the relationship of rigidity to tumescence and the changes in rigidi...
A health assessment study was conducted in response to complaints of groin numbness in a bicycling police unit. Seventeen male cyclists were compared with 5 nonbiking men. The cyclists rode an average...
We studied the effects of sildenafil on sleep-related erections in 44 adult healthy men not affected by erectile dysfunction (mean age ± SD: 39.3 ± 10.5 years). No subjects were administered any m...

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