Bakhshaee,M , , Ghazvini,K , , Naderi,H , , Zamanian,A , , Haghighi,Z , and Bagharabadi,M . "The Prevalencce of Nasopharyngeal Streptococcal Pneumonia Carriers in Mashad day care Children and their Antibiotic Resistance Pattern", Iranian Journal of Otorhinolaryngology, 18, 3, 2006, 119-126. doi: 10.22038/ijorl.2006.2943