附件1:《海狗丸》

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[2] Eardley I, Ellis P, Boolell M, et al. onset and duration of action of sildenafil for the treatment of erectile dysfunction[J]. British journal of clinical pharmacology, 2002, 53: 61S-65S.

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[4] 枸櫞酸西地那非片（25mg）說明書

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[6] Perito, Paul. "Penile Implants". PeritoUrology. Perito Urology. Retrieved 12 November 前年.[self-published source?]