P N Trewby A V Reddy C S Trewby V J Ashton G Brennan J Inglis

marcello campagna department of public health, clinical and molecular medicine, university of cagliari, cagliari, italy; marcello campagna, department of public health, clinical and molecular medicine, university of cagliari, cagliari, italy. tel: +39-0706754441 noemi maria mereu department of public health, clinical and molecular medicine, university of cagliari, cagliari, italy lucia mulas azienda ospedaliero-universitaria, policlinico universitario, monserrato, cagliari, italy roberta pilia department of public health, clinical and molecular medicine, university of cagliari, cagliari, italy maria francesca piazza department of public health, clinical and molecular medicine, university of cagliari, cagliari, italy laura spada department of public health, clinical and molecular medicine, university of cagliari, cagliari, italy