Author contributions
S.H.J and J.J.L. designed the study. H.K.K and H.C.K. analyzed the results of the standard-dose of corticotropin test. S.Y.A prepared the manuscript; M.K., G.Y.S., J.S.A., D.H.Y., and H.J.K. critically reviewed the manuscript.
Disclosure statement
The authors have declared no conflicts of interest.