DEXAMETHASONE-AZATHIOPRINE PULSE THERAPY AS AN ALTERNATIVE TREATMENT MODALITY IN PEMPHIGUS WITH DEXAMETHASONE-CYCLOPHOSPHAMIDE PULSE THERAPY FAILURE: A RETROSPECTIVE OBSERVATIONAL STUDY. (2020). International Journal of Medical Science And Diagnosis Research, 4(5). https://www.ijmsdr.com/index.php/ijmsdr/article/view/578