Onoh, L.U.M. (2020). The Role Of Non-Modifiable Risk Factors For Peptic Ulcer Disease In Patients Attending A Tertiary Hospital In Enugu, South East Nigeria: The Role Of Non-Modifiable Risk Factors For Peptic Ulcer Disease In Patients. National Journal of Integrated Research in Medicine, 11(3), 7–10. https://doi.org/10.70284/njirm.v11i3.2812