"Infancy" . "Rotaviruses" . "Nursing research" . "RTT" . "Cohort study methods" . "Virus genera" . "Epidemiology" . "Symptoms and signs: Digestive system and abdomen" . "Pediatrics" . "Symptoms" . "Clinical research" . "Infectious diseases" . "Medical terminology" . "Gastroenterology" . "RTTEM" .