Abadan Faculty of Medical Sciences Abadan Iran;
Infectious and Tropical Diseases Research Center Health Research Institue Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran;
Abadan Faculty of Medical Sciences Abadan Iran;
Infectious and Tropical Diseases Research Center Health Research Institue Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran;
Infectious and Tropical Diseases Research Center Health Research Institue Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran;
Biostatistics and Epidemiology Department Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran;