Zárate Mediano , P.; Vargas Nava, G.; Morales Hernández, B. P. Polypharmacy and Chronic Intake of Non-Steroidal Anti-Inflammatory Drugs in Relation to Upper Gastrointestinal Bleeding in Patients over 45 Years of Age. CN 2025, No. 94, 59-65. https://doi.org/10.35830/cn.vi94.823.