Preoperative lateralization of ACTH-secreting pituitary microadenomas by bilateral and simultaneous inferior petrosal venous sinus sampling. - Oldfield,E.H.; Chrousos,G.P.; Schulte,H.M.; Schaaf,M.; McKeever,P.E.; Krudy,A.G.; Cutler,G.B.; Loriaux,D.L.; Doppman,J.L. (N Engl J Med, 1985)