Chuluun, E.; Ankhbayar, B.; Ganzorig, G.; Luuzan, G.; Dambadarjaa, D.; Dungerdorj, Z.; Chimedtseye, P. Ultrasound for Appendicitis: Performance and Integration With Clinical and Laboratory Parameters. Cent. Asian j. Med. Sci. 2021, 7, 117-123.