■参考文献（論文）
・The effect of daily ejaculation on semen parameters and sperm DNA damage in normal men
・Ejaculation Frequency and Risk of Prostate Cancer: Updated Results with an Additional Decade of Follow-up
・Influence of the abstinence period on human sperm quality: analysis of 2,458 semen samples
・Ming Jiang. Periodic changes in serum testosterone levels after ejaculation in men）
・The effect of daily ejaculation on semen parameters and sperm DNA damage in normal men
・Ejaculation Frequency and Risk of Prostate Cancer: Updated Results with an Additional Decade of Follow-up
・Influence of the abstinence period on human sperm quality: analysis of 2,458 semen samples
・Ming Jiang. Periodic changes in serum testosterone levels after ejaculation in men）
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