"Conditions diagnosed by stool test" . "Diseases of intestines" . "Phylogenetics" . "Sanitation" . "Molecular evolution" . "Diarrhea" . "RTT" . "Infectious diseases" . "Infancy" . "RTTEM" . "Intestinal infectious diseases" . "Feces" . "Symptoms and signs: Digestive system and abdomen" . "Waterborne diseases" .