High variability in baseline urinary free cortisol values in patients with Cushing’s disease - Petersenn, S; Newell-Price, J; Findling, J W; Gu, F; Maldonado, M; Sen, K; Salgado, L R; Colao, A; Biller, B MPasireotide B2305 Study Group (Clin Endocrinol (Oxf), 2014)