Author/Authors :
Pourhoseingholi, Mohamad Amin Gastroenterology and Liver Diseases Research Center - Research Institute for Gastroenterology and Liver Diseases - Shahid Beheshti University of Medical Sciences, Tehran, Iran , Baghestani, Ahmadreza Department of Biostatistics - Shahid Beheshti University of Medical Sciences, Tehran, Iran , Abadi, Alireza Department of Biostatistics - Shahid Beheshti University of Medical Sciences, Tehran, Iran , Hajizadeh, Nastaran Department of Biostatistics - Shahid Beheshti University of Medical Sciences, Tehran, Iran