[1]
Chávez Barriga, J. 2020. Frequency of Helicobacter pylori infection in patients attended at Centro de Salud Ocaña, Ayacucho. Revista Médica Herediana. 31, 1 (Apr. 2020), 23–29. DOI:https://doi.org/10.20453/rmh.v31i1.3724.