A response to the letter to the editor on "Management of hepatitis B reactivation in lymphoma patients on rituximab with past hepatitis B exposure: An observational study". (September 2018) - Yeo, Denise; Hossain, Ihtimam; Lim, Soon Thye; Farid, Mohamad; Tao, Miriam; Quek, Richard; Tang, Tiffany; Chan, Alexandre