Rahman, Hasan Zahidur, Md. Rafiqul Islam, Abdus Salam, Md. Moniruzzaman Bhuiyan, Abu Nasir Rizvi, Kanuj Kumar Barman, and Sk. Mahbub Alam. 2014. “Association of Serum Testosterone Level With Depression in Parkinson’s Disease”. Bangladesh Journal of Neuroscience 27 (2):57-63. https://doi.org/10.3329/bjn.v27i2.17541.