Shaheen, M.S.A., Chowdhury, A.N., Sardar, K., Rahman, M., Biswas, S.S. and Taous, A. 2020. Controlled Hypotension for Functional Endoscopic Sinus Surgery: A Comparative study of Dexmedetomidine and Esmolol. Bangladesh Journal of Otorhinolaryngology. 24, 1 (Feb. 2020), 37–49. DOI:https://doi.org/10.3329/bjo.v24i1.45340.