Correction: Comparison of the efficacy of pioglitazone and metformin on ultrasound grade and liver enzymes level in patients with non-alcoholic fatty liver disease: A randomized controlled clinical trial - Khoshbaten, Manouchehr; Beheshtirouy, Samineh; Shayanrad, Shahrzad; Gharekhani, Afshin; Rezaee, Haleh (Drug Research, 2023)