Nasri, M. R., Khorvash, F., Zolfaghari, M. R., & Mobasherizadeh, S. "The Relative Frequency of Clostridium Difficile in Fecal Samples of Hospitalized Patients with Diarrhea by ELISA Method", Journal of Isfahan Medical School, 29, 167, 2012, 2376-2382.