Risks, indications and technical aspects of colonoscopy in elderly or frail patients. Position paper of the Societat Catalana de Digestologia, the Societat Catalana de Geriatria i Gerontologia and the Societat Catalana de Medicina de Familia i Comunitaria. - Machlab S; Francia E; Mascort J; García-Iglesias P; Mendive JM; Riba F; Guarner-Argente C; Solanes M; Ortiz J; Calvet X (Gastroenterologia y hepatologia, 2024)