F. Zayeri, S. Chaibakhsh, A. Pourhoseingholi, A. Akbarzadeh Baghban, and S. M. Alavian, “Random effect model for identifying related factors to virological response in HCV patients”, Gastroenterol Hepatol Bed Bench, vol. 6, no. Supplement 1, pp. Gastroenterol Hepatol Bed Bench 2013;6(Suppl.1):S65–S69, Oct. 2013.