Takagi S, Tanabe A, Tsuiki M, Naruse M, Takano K. Hypokalemia, diabetes mellitus, and hypercortisolemia are the major contributing factors to cardiac dysfunction in adrenal Cushing's syndrome. Endocr J. 2009;56(8):1009–18. doi: 10.1507/endocrj.k09e-198. PMID: 19789419.