Long-term high-dose L-arginine supplementation in patients with vasculogenic erectile dysfunction: a multicentre, double-blind, randomized, placebo-controlled clinical trial.
Menafra D, de Angelis C, Garifalos F, Mazzella M, Galdiero G, Piscopo M, Castoro M, Verde N, Pivonello C, Simeoli C, Auriemma RS, Colao A, Pivonello R.