1. Vaccination against typhoid fever: present status;Ivanoff;Bull World Health Organ,1994
2. Enteric fever in child-hood;Johnson;J Trop Med Hyg,1981
3. Typhoid and paratyphoid fever;Bhan;Lancet,2005
4. Clinical features and early diagnosis of typhoid fever emphasizing usefulness of detecting mesenteric lymphadenopathy with ultra-sound as diagnostic method;Nakachi;Southeast Asian J Trop Med Public Health,2003
5. Mesentric adenitis and acute terminal ileitis: ultrasound evaluation using graded compression;Puylaert;Radiology,1986