1
Positive samples were preserved in saline formol solution.
2
Stools were examined after formol-ether concentration.
3
Additionally, a formol-ether concentration method was used on one stool sample for the diagnosis of helminths and intestinal protozoa.
4
The prevalence of intestinal infections with Taenia and other parasites was investigated, by formol-ether concentration of three stool samples from each subject (N = 536).