Cushing's syndrome is usually caused by: _____________ use. Can also be caused by _______, ____________, or hypothalamus tumors.
a) Corticosteroid; Diabetes; Hypothyroidism
b) Insulin; Hyperthyroidism; Renal failure
c) Corticosteroid; Hyperthyroidism; Adrenal tumors
d) Insulin; Hypothyroidism; Hepatic failure
