The flavonoid quercetin induces acute vasodilator effects in healthy volunteers: correlation with beta-glucuronidase activity - Perez, A; Gonzalez-Manzano, S; Jimenez, R; Perez-Abud, R; Haro, J M; Osuna, A; Santos-Buelga, C; Duarte, J; Perez-Vizcaino, F (Pharmacol Res, 2014)