Mohammed AL-Naqqash, M. A. Chromogranin A: As A Tumor Marker for Neuroendocrine Tumors Diagnosis, Follow-up & Its Correlation With Response to Somatostatin Analogues. J Fac Med Baghdad 2016, 58 (4), 307-311. https://doi.org/10.32007/jfacmedbagdad.584270.