Describir: Retracted: Clustering of Brain Tumor Based on Analysis of MRI Images Using Robust Principal Component Analysis (ROBPCA) Algorithm...Hamzenejad A., Ghoushchi S. J., Baradaran V. Clustering of Brain Tumor Based on Analysis of MRI Images Using Robust Principal Component Analysis (ROBPCA) Algorithm. BioMed Research International. 2021; 2021, 11,