Oswaldo Valdivia md: icon professOswaldo Valdivia md: icon professor and researcher at the Universidad Centroccidental Lisandro Alvarado.or and researcher at the Universidad Centroccidental Lisandro Alvarado. Rev Vzlana Sal Pub. [Internet]. 2020 Apr. 8 [cited 2026 Jul. 24];8(1):121-30. Available from: https://revistas2.uclave.org/index.php/rvsp/article/view/2886