[1] Osped Antonio Cardarelli, Dept Cardiol, Naples, Italy
[2] Villa Fiori Hosp, Dept Cardiol, Acerra, Italy
[3] Univ Frederico II, Dept Clin & Expt Med, Naples, Italy
[4] Osped Antonio Cardarelli, Clin Anal Lab, Naples, Italy
[5] SUNY Buffalo, Dept Social & Prevent Med, Buffalo, NY USA
[6] Wake Forest Univ, Vasc Ultrasound Res Unit, Winston Salem, NC 27109 USA