Feces - parasitology, Helminths - classification, Intestinal Diseases, Helminths - isolation & purification, Helminthiasis - ethnology, Parasitic - ethnology, Anthelmintics - therapeutic use, Minority Groups - statistics & numerical data, Helminthiasis - drug therapy, Helminths - drug effects, Parasitic - drug therapy, Praziquantel - therapeutic use, Rural H...