Pugalendhi, S., T. K. Dutta, D. ., and K. Yadav. “A Rare Case of Duodenal Carcinoid Presenting As Ectopic Cushing’s Syndrome”. International Journal of Advances in Medicine, vol. 6, no. 3, May 2019, pp. 959-62, doi:10.18203/2349-3933.ijam20192270.