Demb J, Kolb JM, Dounel J, Fritz CDL, Advani SM, Cao Y, Coppernoll-Blach P, Dwyer AJ, Perea J, Heskett KM, Holowatyj AN, Lieu CH, Singh S, Spaander MCW, Vuik FER, Gupta S. Red Flag Signs and Symptoms for Patients With Early-Onset Colorectal Cancer: A Systematic Review and Meta-Analysis. JAMA Netw Open. 2024 05 01; 7(5):e2413157.