Zárate Mediano P, Vargas Nava G, Morales Hernández BP. Polypharmacy and chronic intake of non-steroidal anti-inflammatory drugs in relation to upper gastrointestinal bleeding in patients over 45 years of age. CN [Internet]. 2025 Aug. 16 [cited 2026 Nov. 13];(94):59-65. Available from: https://cic.cn.umich.mx/cn/article/view/823