1.
Guimarães AM, Guimarães AW, Guimarães AW, Olivi CML, Olivi COL, Oliveira Brito APS, et al. Development of a portable prototype: pH meter for prolonged esophageal pH monitoring with low cost materials. ijaers [Internet]. 2020 Apr. 14 [cited 2024 Jul. 22];7(4). Available from: https://journal-repository.com/index.php/ijaers/article/view/1832