1. Epidemic of diphtheria in the region of Bio Bio, Chile;Vera, R.; Umania, M.;Boletin de Epidemiologia,1987
2. Diphtheria in the eighties in a south Indian district hospital;Havaldar, P.V.;J Indian Med Assoc,1992
3. Diphtheria in Jordan: a diminishing yet important paediatric disease;Khuri, B.;J Trop Med Hyg,1980
4. Diphtheria in Afghanistan-review of 155 cases;Singh, M.; Saidali, A.; Baktiar, A.; Arya, L.S.;J Trop Med Hyg,1985
5. Diphtheria among alcoholic urban adults;Harnish, J.P.; Tronca, E.; Nolan, C.; Turck, M.; Holmes, K.;Ann Intern Med,1989