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Rosen, R., Shaw, J. Efficacy of PDE-5-inhibitors for erectile dysfunction. A comparative meta-analysis of fixed-dose regimen randomized controlled trials administering the International Index of Erectile Function in broad-spectrum populations. Int J Impot Res 18, 570–571 (2006). https://doi.org/10.1038/sj.ijir.3901488
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DOI: https://doi.org/10.1038/sj.ijir.3901488