adult; article; cancer incidence; cancer patient; cancer prognosis; cancer surgery; cancer survival; colorectal cancer; colorectal tumor; controlled study; coronavirus disease 2019; economic development; environmental risk; government; human; incidence; Korea; mass screening; mortality; mortality rate; overall survival; prevention; primary prevention; prognosis; public health; risk factor; screening test; secondary prevention; surgery; surgical technique; adjuvant; antineoplastic agent