Maryanti, E. , Lesmana, S.D. , Firja, W. , Devlin, M. , Mislindawati and Siagian, F.E. 2022. Detection of Opportunistic Intestinal Protozoans in The Feces of Orphanage Children in Pekanbaru. Nusantara Science and Technology Proceedings. (Dec. 2022), 53-57. DOI:https://doi.org/10.11594/nstp.2022.2809.