Somatostatin Treatment for Ectopic ACTH Syndrome due to Pancreatic Neuroendocrine Tumors: Review of the Literature oleh Da Zhang, Lin Lu, Hui-Juan Zhu, Yu Xiao, Xian-Lin Han, Shun-Da Du, Hua-Dan Xue, Qing-Xing Liu, Zhao-Hui Zhu, Ming-Ming Hu, Xiao Zhai, Xiao-Ping Xing, Zhao-Lin Lu