TY - JOUR AU - Launoy, G; Veret, J L; Richir, B TI - Involvement of general practitioners in mass screening. Experience of a colorectal cancer mass screening programme in the Calvados region (France) JO - Eur J Cancer Prev VL - 2 PY - 1993 DO - 10.1097/00008469-199305000-00006 SP - 229 EP - 232 N1 - et al. ER -