Efficacy of a novel water-soluble curcumin derivative versus sildenafil citrate in mediating erectile function. - Zaahkouk, A M S; Abdel Aziz, M T; Rezq, A M; Atta, H M; Fouad, H H; Ahmed, H H; Sabry, D; Yehia, M H (International Journal of Impotence Research, 2015)