Habib, M. A. ., N. . Anwar, P. B. . Dhar, M. R. . Alam, B. . Paul, and M. R. . Karim. “Non-Motor Symptoms of Parkinson`s Disease Patients Attending at a Tertiary Care Hospital of Bangladesh”. Bangabandhu Sheikh Mujib Medical University Journal, vol. 14, no. 4, Mar. 2022, pp. 121-4, doi:10.3329/bsmmuj.v14i4.56610.