Ansari, Israque Hossain, et al. “Determination of Normal Ranges of T3, T4, FT4 & TSH in Healthy Individuals of NINMAS by Using Korea and China Kits”. Bangladesh Journal of Nuclear Medicine, vol. 18, no. 2, Jan. 2018, pp. 149-51, doi:10.3329/bjnm.v18i2.35226.