title: Differential diagnosis in Cushing's syndrome: the role of inferior petrosal sinus sampling.
authors.forename: P J
authors.initials: PJ
authors.lastname: Trainer
authors.forename: G M
authors.initials: GM
authors.lastname: Besser
mesh_terms: D000182:ACTH Syndrome, Ectopic / Q000175:diagnosis; D003480:Cushing Syndrome / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D017591:Petrosal Sinus Sampling