Chan Verdugo, M. A. .; Martínez Flores, A. .; Patiño Romero, V. A. .; Hernández Amaro, A. E. .; Quintero Chávez, E. .; Cázarez Echávarri, E. E. . Diagnosis and Treatment of Upper Gastrointestinal Bleeding for the Primary Care Physician. International Journal Of Medical Science And Clinical Research Studies 2022, 2, 1313-1316.