Clin. pharmacol. ther. Clin. pharmacol. ther. Low-dose aspirin acetylates cyclooxygenase-1 in human colorectal mucosa: implications for the chemoprevention of colorectal cancer. Patrignani P Sacco A Sostres C Bruno A Dovizio M Piazuelo E Universidad de Zaragoza Di Francesco L Contursi A Zucchelli M Schiavone S Tacconelli S Patrono C Lanas A. Universidad de Zaragoza 2017 research-article