Humans Primary Health Care human primary health care Colonoscopy Colorectal Neoplasms Colorectal neoplasms Communication Early Detection of Cancer Faecal immunochemical tests Follow-Up Studies Full blood count Occult Blood Predictive value of tests Primary health care Self Care Triage Uncertainty colonoscopy colorectal tumor communication decision making early cancer diagnosis follow up interpersonal communication occult blood patient safety primary care procedures risk management