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Bryan Johnson @bryan_johnson

Sources:

[1], [2] Horita H, Kumamoto Y. [Study on nocturnal penile tumescence (NPT) in healthy males study on age-related changes of NPT]. Nihon Hinyokika Gakkai Zasshi. 1994 Oct;85(10):1502-10. Japanese. doi: 10.5980/jpnjurol1989.85.1502. PMID: 7990298