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Champion, H. C., T. J. Bivalacqua, A. L. Hyman, L. J. Ignarro, W. J. G. Hellstrom, und P. J. Kadowitz. Gene Transfer of Endothelial Nitric Oxide Synthase to the Penis Augments Erectile Responses in the Aged Rat. The National Academy of Sciences, 1999.

Champion, H. C., et al. Gene Transfer of Endothelial Nitric Oxide Synthase to the Penis Augments Erectile Responses in the Aged Rat. The National Academy of Sciences, 1999.