Adrenocorticotropin stimulation test: Effects of basal cortisol level, time of day, and suggested new sensitive low dose test. - Dickstein,G.; Shechner,C.; Nicholson,W.E.; Rosner,I.; Shen-Orr,Z.; Adawi,F.; Lahav,M. (J Clin Endocrinol Metab, 1991)