Barretto MP. Diagncsis of chronic amebiasis. II. Comparative study of the efficiency of the zinc sulfate centrifugal-floatation technic, in successive stool specimens and of the examination of purged stools, used either separately or in combination. Rev. Inst. Med. Trop. São Paulo [Internet]. 1963 Feb. 6 [cited 2024 Jul. 8];5(1):1-11. Available from: https://revistas.usp.br/rimtsp/article/view/202337